ࡱ> !` !bjbj\\ $>>_(L4vvvhޏtRN("<<<Y[[[[[[$(hyg"yy<<+y8<<YyY< prvK0``@`1Jӧ t W" Nyyyydvv  Data Sets for Use in Statistic, Measurement and Design Courses Charles Stegman, Calli Holaway-Johnson, Sean Mulvenon, Sarah McKenzie, Ronna Turner, and Karen Morton University of Arkansas Paper presented at the Joint Statistical Meeting of the American Statistical Association, International Biometric Society, Institute of Mathematical Statistics, and Statistical Society of Canada Seattle, Washington August 2006 Data Sets for Use in Statistic, Measurement and Design Courses Abstract A major focus in teaching graduate level courses in statistics, measurement, and design should be the analysis of data. Results can be used to illustrate key concepts underlying the procedures discussed, help students learn how to analyze theoretical data in preparation for their careers, aid in interpreting and presenting research results, and contribute to preparing future researchers. This paper presents information on a multitude of data sets applicable for teaching courses at multiple levels and the accompanying CD contains the actual datasets. Background It is common for textbooks in statistics and research methodology to include a disk with several datasets that are used throughout the text. Glass and Hopkins (1996) is a good example, although others could be mentioned. Textbook datasets are commonly limited in terms of the number of datasets included and the number of cases within each dataset. The CD produced for this paper contains over 100 datasets from multiple fields, as well as Monte Carlo computer generated datasets. In addition, the datasets can be used across a range of courses from the introduction to research methodology and statistics through regression, ANOVA, multivariate, and advanced measurement. Development of the CD A first step was to locate publicly accessible datasets available on the web. These are datasets that can be downloaded and used in teaching so long as appropriate acknowledgement is given. For example, many researchers and professors have made their datasets available for public use through the StatLib library at Carnegie-Mellon University [http://lib.stat.cmu]. Three other helpful sites are the National Institute of Standards & Technology website [www.itl.nist.gov/div898/strd/general/dataarchive.html], the UCLA Statistics Lab website [www.ats.ucla.edu/stat], the Journal of Statistics Education Data Archive (www.amstat.org/publications/jse/jse_data_archive.html), and the DataFerrett [www.thedataweb.org]. The first site contains datasets that can used to test or demonstrate the accuracy and precision of different computer packages when analyzing statistical data. The UCLA site contains a wealth of statistical information and sample programs. The JSE Data Archive contains datasets that have been submitted by researchers around the world, and includes articles utilizing the datasets if available. The DataFerrett allows you to search multiple topics through data mining technology and select variables for different analyses. For the CD, selected datasets have been collected from these sites, with each dataset reviewed and included because it relates to topics regularly used as examples in statistics and research methodology courses. The datasets represent data from many fields of studies as do the examples in many of the textbooks. While professors and students can access any of these public domain datasets, the advantage of collecting them on a CD is that they are put into a standard format (Excel) and made readily available for uploading into numerous statistical packages. This should facilitate their use by multiple users in a variety of courses. Each dataset includes variable descriptions as well as the bibliographic information from the original source. Additionally, samples from large scale datasets based on government sponsored research have been generated to support substantive based educational research examples. For example, census data and other government sponsored large scale research have produced datasets, such as the Early Childhood Longitudinal Study (ECLS-K), the National Longitudinal Study of Youth (NLSY), the National Household Education Survey (NHES), and the National Education Longitudinal Study (NELS). DataFerrett can also be used to access large scale databases. The following are some of the topics that are available from DataFerrett: Health Care, Child School Enrollment, Computer Ownership & Uses, Voting & Registration, Race & Ethnicity, School Enrollment, Teenage Attitudes & Practices, and Library Use. Note the DataFerrett allows you to search these and many more topics and select the variable sets you want. A third area where datasets have been generated is through Monte Carlo procedures. By specifying population parameters, we generated datasets that reflect educational settings and illustrate important statistical properties. Multivariate data are also generated that can be used in number of ways. For instance, variables can be selected for analysis in introductory courses and then revisited in more advanced courses like regression, design and multivariate statistics. The Structure of the CD Table 1 contains a list of the datasets contained on the CD. The title of each dataset is provided, as well as its name on the CD. The sample size and variables are also included. Finally, the original source for the data is given. Insert Table 1 The datasets have been reformed into Excel files. Many of the original files were in different formats and, while statisticians are adept at handing these, many students may still be learning basic data management. Especially in introductory classes, the emphasis is on data analyses using programs like SAS, SPSS, or R. Having the Excel files allows instructors the opportunity to write one set of instructions for importing data, allowing more time to concentrate on statistical analyses. The exception is the large scale datasets from the national databases which would be applicable to more advanced classes. Given the size of the datasets and the need for the weighting factors, Excel was too limiting. In this case, dBase and SAS data files were created. In more advanced classes, students could be expected to find, import, and clean data from the original sources. They could then analyze the data twice to make sure they get the same answers. Example of Using Some of the Datasets The dataset (Arkansas Math.xls) is based on simulated student data for grades 3-5 on the Arkansas Benchmark Mathematics Examination. The Arkansas Benchmark is a criterion-referenced examination that consists of both multiple-choice and open-response questions. Tests for each grade level are developed to reflect content identified in the Arkansas state frameworks. The multiple-choice and open-response sections are weighted equally in determining a students score. In addition to their reported scaled scores, students are categorized as Below Basic, Basic, Proficient, or Advanced. Students with scaled scores of 200 or above are considered to be proficient and above 250 are considered to be advanced. The dataset contains 216 observations on 19 variables that would be available to school personnel. The observations were generated to reflect the actual variables used by the State of Arkansas for No Child Left Behind (NCLB) school assessments. Some of the ways we have used the Arkansas Math dataset include the following: the scaled scores can be used to demonstrate graphs (frequency distribution, frequency polygon, box plot and stem and leaf), measures of central tendency, variability, skewness, kurtosis and normality. Similarly, we have used the grade, gender and teacher variables to create subgroups for the same type of analyses. Several of the categorical variables are analyzed as well (demographics, crosstabs, and percentages). This is the material in the first five or six chapters in the introductory course. Students are required to create tables and figures using APA formats to help them in writing reports or articles. The Arkansas Math dataset is also used to demonstrate a multitude of different statistical inferential procedures. You can select data for t-tests, ANOVA (one-way and factorials), model assumptions, multiple comparisons, effect sizes, correlation, regression, and chi-square analyses. The multiple choice and open response scores as well as the strand scores reflect multivariate data. Another generated education dataset is Literacy Test.xls. This dataset was created to reflect data that would be available on many state criterion referenced tests that are given at different grade levels. It differs from the previous example in a couple of important ways. First, it is a larger dataset (5000 observations) and second, it includes individual student item scores tied to three stands that might be typical on a Literacy examination. The strands in this example are content, literacy, and practical. Each strand has 8 multiple-choice items (worth 2 points each) and an open-response item worth 16 points. Students receive a scaled score based on the points earned on the literacy items plus their response to a writing prompt. Other variables include gender, race, and free and reduced lunch participation. The same type of analyses mentioned above can be demonstrated with the dataset, but by having item data, a number of advanced measurement issues can also be discussed. A third example involves the two datasets based on the binomial distribution (Random Guessing.xls, 80% Mastery.xls). These datasets involve expected performance of 50 students on examinations worth 40 points. The first set assumes guessing and the second set involves mastery learning. Note that instructors could actually conduct a class exercise and create the first dataset by giving students answer sheets to fill out without giving them the questions. The instructor could have the students score their tests with a pre-assigned answer key. The instructor could also discuss why some national tests involve a correction for guessing. Simple SAS proc univariate analyses show the first distribution is positively skewed (p=0.2), while the second is negatively skewed (p=0.8). Students could then practice merging the datasets and demonstrate a bi-modal distribution. A fourth example (Star.xls) is based on student data (sample size is 150) for the STAR Reading and STAR Math tests given during the first quarter of the school year and the SAT-9 (reading, literacy, and math) given in the spring. Student gender is also included so that there are six variables for each student. Instructors can use the data for descriptive statistical purposes as well as correlation and regression analyses (including the correlation matrix, multiple regression, and testing for bivariate normality). Note an instructor could also do simple procedures using the total data set, separate analyses for each gender, test for equality of correlations, parallelism of regression lines, ANCOVA and MANOVA. One use of such data might be identification of at-risk students and discuss potential interventions that might be used between October and May. The Diamond Pricing datasets provide an example of how different analyses may require reformatting of the datasets. With the Diamond Pricing.xls dataset, students may conduct univariate analyses. With the Diamond Pricing With Dummy Variables.xls dataset, students can perform more complicated analyses such as multiple regression. One valuable exercise might be to have students begin with the basic dataset and create the Data Set With Dummy Variables.xls by using a statistical package such as SAS, SPSS or R. Certain datasets allow for instructors to demonstrate various statistical concepts. For example, the Birth To Ten datasets are actual data that illustrate Simpson's paradox. The Baby Boom.xls dataset allows us to examine a variety of distributions, including binomial, Poisson, and exponential. These types of datasets can assist students in transitioning from a theoretical understanding to pragmatic application. In addition to their use in parametric statistical analyses, many of the datasets lend themselves to nonparametric analyses. A valuable exercise might be to have students analyze a dataset using both parametric and nonparametric procedures. The resulting discussion could focus on the importance of choosing the appropriate statistical analysis, as well as the impact of the violations of normality assumptions. Large Scale Datasets For large scale data analyses we have included the ECLS-K dataset. The Early Childhood Longitudinal Study Kindergarten (ECLSK_sample) dataset is a subset of data from the ECLS-Kindergarten Class of 1998-99 (ECLS-K) Public Use Dataset (http://nces.ed.gov/ecls/) collected by the National Center for Education Statistics (West, http://nces.ed.gov/ecls/pdf/ ksum.pdf). The complete dataset is available for public use, and is located at the NCES website along with more detailed Users Guide information, statistical documentation, and user resources. The complete dataset includes data on a nationally representative sample of about 21,260 children enrolled in both private and public full-day and partial day kindergarten programs in the academic year 1998-99. The type of data includes child and parent demographic, child academic and behavioral, family environment, and classroom and school demographic variables. The data file included in this disk is a subset of 97 academic, behavioral, demographic, and family environment variables (with 6 sample weighting variables and their associated 540 replicate weights) for a total of 643 variables. All 21,260 students are included in the dataset, thus the ECLSK_sample dataset contains the same sampling properties of the original public use dataset. In the original sampling, oversampling occurred for select subgroups such as Asian students and students in private kindergarten programs (West, http://nces.ed.gov/ecls/pdf/ ksum.pdf). Thus, weighting variables are necessary for producing data that are representative of the 1998-99 national population. Additionally, the multi-stage sampling procedure used probability sampling from within primary sampling units. Because the sampling procedure allows for correlated samples, the within-group error variance is an underestimate of what would be found in the population, and subsequently, test statistics computed from the samples will be inflated. There are two common ways to adjust test statistics computed from the samples: the use of Design Effects or the use of re-estimation statistical packages such as SUDAAN (http://www.rti.org/sudaan/) or WestVar (http://www.westat.com/wesvar/). Design effect estimates can be found in the ECLS-K Users Guide. The ECLSK_sample data file is recommended for use by students in moderate to advanced applied research methods and statistics courses; it is not recommended for students in introductory courses. The format of the variables requires students to utilize recoding procedures and provides opportunities for students to practice the creation of new variables by combining multiple related background and/or environmental variables. Weighting can be introduced to the students through the use of the sampling weights provided in the data file. Additionally, students can learn about the need for design effects with samples obtained by clustered or multi-stage sampling procedures and/or the use of jackknifing procedures with selection of the replicate weights provided. The types of variables allow for a variety of statistical procedures including nonparametric statistics, multiple regression, analysis of variance, analysis of covariance, and multivariate analysis of variance procedures. Professors teaching courses that include multiple regression, multivariate analysis, measurement and evaluation, and large-scale database analysis may find the data file useful for classroom examples and student practice. Additionally, professors will be able to create numerous smaller datasets from the data file for classroom use. Included in the ECLS-K folder are the data file in two formats (a dBase file and a SAS data file; an Excel file could not be used because of the 256 variable limit), a Microsoft Word file of the variable codebook, and a SAS file listing the variable labels and format statements. The user will want to review the ECLS-K Users Guide for more detailed information on sampling, data collection, variables, use of weights, design effects, and appropriate variance estimation procedures. The dBase (.dbf) file is recommended for use in WestVar.  SEQ CHAPTER \h \r 1Monte Carlo Simulations If you have descriptive statistical information for a data set, but dont actually have the data set, a very efficient method to help develop a practice or pilot research data set is through the use of Monte Carlo simulations. In Monte Carlo simulations a researcher uses the descriptive data to create parallel data sets that have the characteristics of the original data set. Further, the researcher can create an unlimited number of cases and conditions associated with this original data set. The use of Monte Carlo simulations has traditionally been used in statistics and other related fields to evaluate the effectiveness of new methods and procedures. For example, a researcher develops a new statistical procedure, however this procedure needs to be checked under various conditions for discrepant sample size, normality and non-normality conditions. Collecting data or using archival data sets to evaluate the effectiveness of this new procedure under these various conditions would take a protracted amount of time. Further, issues of random sampling error for the archival data sets may also be problem. Thus, the researcher would use the collected and archival data sets and Monte Carlo simulations. A Monte Carlo simulation using the Stanford Achievement Test, Version 10 (SAT-10) data is demonstrated. Descriptive information for the SAT-10 7th grade spring administration of the exam has been selected. Descriptive information needed to conduct this type of Monte Carlo simulation are the means, standard deviations, and the correlations among all the variables (See Table 2). The variables selected for this simulation are Reading Vocabulary, Reading Comprehension, Reading Total, Math Concepts, Math Problem Solving, and Math Total. Table 2. Descriptive Statistics for SAT-10 7th Grade Spring Exam _____________________________________________________________________________ Correlations Variable Mean Std V1 V2 V3 V4 V5 V6 _____________________________________________________________________________ Reading: Vocabulary (V1) 669.4 39.1 1.00 . . . . . Comprehension (V2) 680.2 48.8 0.91 1.00 . . . . Total (V3) 663.3 39.1 0.96 0.78 1.00 . . . Math: Concepts (V4) 668.6 37.9 0.71 0.65 0.68 1.00 . . Problem Solving (V5) 666.2 37.6 0.69 0.64 0.66 0.95 1.00 . Total (V6) 672.2 48.1 0.64 0.57 0.62 0.93 0.77 1.00 _____________________________________________________________________________ Using the following sample program written in SAS version 9.2 (See Figure 1) you can complete a Monte Carlo simulation of the SAT-10 Grade 7th data provided in Table 2. A data set called SAT 10 Macro.xls with 10,000 observations, generated from using the macro in Figure 1 is available on the provided CD. This type of simulation process can also be extremely valuable for use in classroom environments. The last few lines of SAS code include a procedure called Proc Surveyselect. This procedure can be used to select random subsets of the data from the file SAT 10 Macro.xls. For this example, we have selected a sample of 200, with the data output to a file called temp1. This file, listed on the CD as Temp 1.xls, contains the 200 observations, randomly selected from SAT 10 Macro.xls. To confirm the macro is working effectively, the descriptive statistics for "temp1" are provided in Table 3. A comparison of the descriptive statistics from Table 2 with Table 3 provides the necessary evidence to confirm that temp1" is a representative sample of the SAT-10 7th Grade achievement data. Using Monte Carlo simulation procedures you can develop individualized data sets for students, complete pilot research work, or examine results for previous studies under the different conditions you place on the analyses. Table 3. Descriptive Statistics for Monte Carlo Sample of 200 for SAT-10 7th Grade Fall Exam _____________________________________________________________________________ Correlations Variable Mean Std V1 V2 V3 V4 V5 V6 _____________________________________________________________________________ Reading: Total (V1) 668.5 39.4 1.00 . . . . . Vocabulary (V2) 680.6 49.3 0.91 1.00 . . . . Comprehension (V3) 663.3 39.4 0.96 0.78 1.00 . . . Math: Total (V4) 668.3 37.9 0.72 0.65 0.69 1.00 . . Concepts (V5) 666.0 37.6 0.70 0.64 0.66 0.95 1.00 . Problem Solving (V6) 671.8 48.2 0.64 0.57 0.62 0.93 0.77 1.00 _____________________________________________________________________________ Sample printout from SAS Examples of some of the SAS printout for selected analyses are included in Appendix A. They include a univariate analysis, SAS graph, correlation, and an ANOVA. These demonstrate how a standard statistical program will generate examples for discussion in class. Conclusion and Distribution The paper discussed the contents and structure of the CD datasets as well as suggestions for how some of the datasets can be utilized. The CD is free and you may use it in your teaching. Again, proper credit must be given to the appropriate source. For instance, at StatLib they use the statement: If you use an algorithm, dataset, or other information from StatLib, please acknowledge both StatLib and the original contributor of the material. For the NCES datasets they prefer the following citation: National Center for Education Statistics, U.S. Department of Education. We hope these datasets will be helpful as you prepare your courses. We will continue to add additional datasets to the CD and will make them available to interested professionals. You may contact one of the authors at the University of Arkansas.  Title of Data SetName on CDnVariables in Data SetSource1993 New Car Data1993 Cars93Manufacturer, Model, Type, Minimum price, Midrange price, Maximum price, City MPG, Highway MPG, Air bags standard, Drive train type, Number of cylinders, Engine size, Horsepower, RPM, Engine revolutions per mile, Manual transmission available, Fuel tank capacity, Passenger capacity, Length, Wheelbase, Width, U-turn space, Rear seat room, Luggage capacity, Weight, Domestic manufacturingConsumer Reports: The 1993 Cars-Annual Auto Issue (April), Yonkers: Consumers Union. PACE New Car & Truck 1993 Buying Guide. Milwaukee: Pace Publications. Quoted in Lock, R. H. (1993). 1993 New Car Data. Journal of Statistics Education, 1(1).1994 AAUP Faculty Salary DataAAUP1161Federal ID number, College Name, State, Type, Avg. salaryfull professors, Avg. salaryassociate professors, Avg. salaryassistant professors, Avg. salaryall ranks, Avg. compensationfull professors, Avg. compensationassociate professors, Avg. compensationassistant professors, Avg. compensationall ranks, Number of full professors, Number of associate professors, Number of assistant professors, Number of Instructors, Number of facultyall ranksMarch-April 1994 issue of Academe. Submitted to the Journal of Statistics Education by Robin Lock.2004 New Car and Truck Data2004 Cars428Vehicle name, Sports car, SUV, Wagon, Minivan, Pickup, All-wheel drive, Rear-wheel drive, Suggested retail price, Dealer price, Engine size, Number of cylinders, Horsepower, City MPG, Highway MPG, Weight, Wheel base, Length, WidthKiplinger's Personal Finance, December 2003, vol. 57, no. 12, pp. 104-123, http:/www.kiplinger.com. Submitted to the Journal of Statistics Education by Roger W. JohnsonA Dataset That Is 44% OutliersOutlier43President name, Number of days in office2001 World Almanac. Quoted in Hayden, R. W. (2005). A dataset that is 44% outliers. Journal of Statistics Education, 13(1).Abortion Opinion DataAbortion Opinion2385Race, Gender, Age, OpinionChristensen, R. (1990). Log-linear models. New York: Springer-Verlag.Absentee and Machine Ballot Votes in Philadelphia ElectionsPhiladelphia Voting22Year of election, District number, Democrat absentee vote in district, Republican absentee vote in district, Democrat machine vote in district, Republican machine vote in districtOrley Ashenfelter. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Advertising Pages and Advertising Revenue in 1986Advertising Pages41Name of publication, Number of advertising pages in hundreds, Advertising revenue in millions of dollarsChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Annual Data on Advertising, Promotions, Sales Expenses, and Sales Advertising22Advertising expenditures, Promotion expenditures, Sales expense, Sales, Previous year's advertising expenditures, Previous year's promotion expendituresChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Annual Return Rates in the Stock Market, 1976-1993Stock Market18Year, Standard and Poors Index year end value, Vanguard Index Trust 500 Portfolio year end valueVanguard Market Index Trust 500--Portfolio Annual Report, 1993 (p. 7). Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Attitude Survey DataEmployee Satisfaction30Overall rating of job being done by supervisor, Handles employee complaints, Does not allow special privileges, Opportunity to learn new things, Raises based on performances, Too critical of poor performances; Rate of advancing to better jobsChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Average Monthly Air Temperature in Recife, Brazil, 1953-1962Average Temperature120Month, Year, Average air temperature for a given monthhttp://www.bath.ac.uk/~mascc/ Recife.TSBall Bearing Reliability DataBall Bearings210Company code, Test number, Year of test, Number of bearings, Load, Number of balls, Diameter, L10, L50, Weibull slope, Bearing typeLieblein and Zelen (1956). Statistical investigation of the fatigue life of deep-groove ball bearings. Quoted in Caroni (2002). Modeling the reliability of ball bearings. Journal of Statistics Education, 10(3).Baseline Data for Mayo Clinic Trial in Primary Biliary Cirrhosis (PBC) of the LiverBaseline Cirrhosis418ID; Number of days between registration and the earlier of death, transplantion, or study analysis time in July, 1986; Death status; Drugs administered; Age; Sex; Presence of ascites; Presence of hepatomegaly; Presence of spiders; Presence of edema; Serum bilirubin; Serum cholesterol; Albumin; Urine copper; Alkaline phosphatase; SGOT; Triglycerides; Platelets; Prothrombin time; Histologic stage of diseaseFleming, T. R., & Harrington, D. P. (1991). Counting processes and survival analysis. New York: Wiley. Betting on Professional Football Results for 1989-1991NFL672Name of favored team, Name of underdog team, Betting result, Day and time of game, Favored team at home or away, Week of season, YearCompiled by Hal Stern. Submitted to the Statlib facility by Robin Lock. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Birth to Ten Study: An Example of Simpson's ParadoxBirth to Ten A (Note: This data set contains the same information as Birth to Ten B in a different format.)1590Medical aid given to mother, Mother traced for 5 year interview, Race, FrequencyChronic Diseases of Lifestyle Programme at the Medical Research Council in Cape Town, South Africa. Quoted in Morrell, C. H. (1999). Simpson's paradox: An example from a longitudinal study in South Africa. Journal of Statistics Education, 7(3).Birth to Ten Study: An Example of Simpson's ParadoxBirth to Ten B (Note: This data set contains the same information as Birth to Ten A in a different format.)1590Medical aid given to mother, Mother traced for 5 year interview, RaceChronic Diseases of Lifestyle Programme at the Medical Research Council in Cape Town, South Africa. Quoted in Morrell, C. H. (1999). Simpson's paradox: An example from a longitudinal study in South Africa. Journal of Statistics Education, 7(3).Building Characteristics and Sales PriceProperty Valuation24Taxes, Number of bathrooms, Lot size, Living space, Number of garage stalls, Number of rooms, Number of bedrooms, Age of the home, Number of fireplaces, Sale priceNarula, S. C., & Wellington, J. F. (1977). Technometrics, 19 (2). Quoted in Chatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Calcium, Inorganic Phosphorus and Alkaline Phosphatase Levels in Elderly PatientsCalcium (Note: This dataset intentionally has errors so that students may practice cleaning data. The cleaned dataset is Calciumgood.)178Patient observation number, Age in years, sex; Alkaline phosphatase international units/liter, Lab name, Calcium mmol/L, Inorganic phosphorus mmol/L, Age groupBoyd, J., Delost, M., and Holcomb, J. (1998). Calcium, phosphorus, and alkaline phosphatase laboratory values of elderly subjects. Clinical Laboratory Science, 11. Quoted in Holcomb, J., and Spalsbury, A. (2005). Journal of Statistics Education, 13(3).Calcium, Inorganic Phosphorus and Alkaline Phosphatase Levels in Elderly Patients--Cleaned DatasetCalciumgood178Patient observation number, Age in years, sex; Alkaline phosphatase international units/liter, Lab name, Calcium mmol/L, Inorganic phosphorus mmol/L, Age groupBoyd, J., Delost, M., and Holcomb, J. (1998). Calcium, phosphorus, and alkaline phosphatase laboratory values of elderly subjects. Clinical Laboratory Science, 11. Quoted in Holcomb, J., and Spalsbury, A. (2005). Journal of Statistics Education, 13(3).Cigarette Consumption Data by State, 1970Cigarette Consumption51State; Median age; Percentage of people over 25 years of age who had completed high school; Per capita personal income; Percentage of blacks; Percentage of females; Weighted average price of a pack of cigarettes; Number of packs of cigarettes sold on a per capita basisChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Cloud Seeding DataCloud Seeding24Action, Day number, Seeding suitability, Echo coverage, Prewetness, Echo motion, Amount of rainWoodley, W. L., Simpson, J., Biondini, R., & Berkeley, J. (1977). Rainfall results 1970-75: Florida area cumulus experiment. Science, 195, 735-42. Quoted in Cook, R. D., & Weisberg, S. (1982). Residuals and influence in regression. New York: Chapman and Hall.Cloud-seeding Experiment in Tasmania Between Mid-1964 and January 1971Rainfall108Period, Seeding status, Season, East target area rainfall, West target area rainfall, North control area rainfall, South control area rainfall, Northwest control area rainfallMiller, A. J., Shaw, D. E., Veitch, L. G. & Smith, E. J. (1979). Analyzing the results of a cloud-seeding experiment in Tasmania. Communications in Statistics - Theory & Methods, vol. A8(10), 1017-1047.Comparison of Changes in Exchange Rates and Differences in Inflation Rates for Various CountriesExchange Rates44Country name, Change in exchange rate 1975-1990, Change in exchange rate 1985-1990, Change in inflation rates 1975-1990, Change in inflation rates 1985-1990International Financial Statistics Yearbook. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Comparison of Health Care Spending Across the United StatesHealth Care Spending50State, Census Bureau region of the state, Census Bureau region number, Per capita health spending, Percent of per capita income spent on healthThe New York Times. October 15, 1993. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Comparison of Productivity and Quality in Japanese and Non-Japanese Automobile ManufacturingJapanese Autos27Assembly defects per 100 cars, Hours per vehicle, National origin of facility, Assembly defects per 100 cars (non-Japanese origin), Assembly defects per 100 cars (Japanese origin), Hours per vehicle (non-Japanese origin), Hours per vehicle (Japanese origin)Womack, J. P., Jones, D. T., & Roos, D. (1990). The machine that changed the world. New York: Rawson. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Consumer Expenditure and Money Stock 1952-1956Consumer Expenditure20Quarter, Consumer expenditure, money stockFriedman, M., & Meiselman, D. (1963). Commission on money and credit, stabilization policies. Englewood Cliffs, NJ: Prentice Hall. Quoted in Chatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.County Data from the 2000 Presidential Election in Florida (Excluding Federal Absentee Votes)Florida Voting 200067County, Type of voting machine used, Column format of ballot, Undervote count, Overvote count, Votes counted for Bush, Gore, Browne, Nader, Harris, Hagelin, Buchanan, McReynolds, Phillips, Moorehead, Chote, McCarthyhttp://www.stat.ufl.edu/~presnell/fl2000.txtData on French Economy; IMPORT Data (Billions of French Francs)French Economy18Year, Imports, Domestic production, Stock formation, Domestic consumptionMalinvaud, E. (1968). Statistical methods in econometrics. Chicago: Rand McNally. Quoted in Chatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Diameter, Height, and Volume of Black Cherry Trees in Allegheny National Forest, PennsylvaniaCherry Trees31Diameter, Height, VolumeRyan, T., Joiner, B., & Ryan, B. (1976). Minitab student handbook. North Scituate, MA: Duxbury Press. Quoted in Cook, R. D., & Weisberg, S. (1982). Residuals and influence in regression. New York: Chapman and Hall.Diamond Pricing with Dummy VariablesDiamond Pricing with Dummy Variables308Carat, Indicator for color D, Indicator for color E, Indicator for color F, Indicator for color G, Indicator for color H, Indicator for clarity IF, Indicator for clarity VVS1, Indicator for clarity VVS2, Indicator for clarity VS1, Indicator for certification body GIA, Indicator for certification body IGI, Indicator for medium stones, Indicator for large stones, Interaction variable med*carat, Interaction variable large*carat, Carat squared, Price in Singapore dollars, Ln(Price)Chu, S. (2001). Pricing the C's of diamond stones. Journal of Statistics Education, 9(2).Disposable Income and Ski Sales for Years 1964-1974Ski Sales 140Quarter, Ski sales, Personal disposable incomeChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Disposable Income, Ski Sales, and Seasonal Variables for Years 1964-1974Ski Sales 240Quarter, Ski sales, Personal disposable income, SeasonChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Distribution for Males and Females Born in Sweden in 1935Swedish Birth Dates12Month, Number of females born, Number of males bornCramer, H. (1946). Mathematical methods of statistics. Princeton: Princeton University Press. Quoted in Christensen, R. (1990). Log-linear models. New York: Springer-Verlag.Distribution of White Student Enrollment in Nassau County School DistrictsWhite Enrollment56District, Proposed legislative district, Total public school enrollment, White student enrollmentNewsday, May 20, 1994. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Dow Jones Industrial Average and the S & P 500 Index Values Weekly From February 1, 1991 to February 25, 1994Dow Jones161Date, Dow Jones Industrial Average at the close of the day, Standard and Poors 500 Stock Index at the close of the dayChatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Drill Bit Performance Over a Range of Drilling ConditionsDrill Bit Data31Speed of rotation, Feed rate, Diameter of drill bit, Axial load on drill bitM. R. Delozier of Kennametal, Inc., Latrobe, Pennsylvania. Quoted in Cook, R. D., & Weisberg, S. (1982). Residuals and influence in regression. New York: Chapman and Hall.Drug Dosage Retained in Rat LiversRat Data19Body weight, Liver weight, Relative dose, Percentage of dose retained in liverWeisberg, S. (1980). Applied Linear Regression. New York: Wiley. Quoted in Cook, R. D., & Weisberg, S. (1982). Residuals and influence in regression. New York: Chapman and Hall.Early Childhood Longitudinal Study (ECLS-K) DataECLSK_sample.sas7bdat21260See ECLSK_sample codebook.doc (643 variables available)National Center for Education Statistics, U.S. Department of Education; accessed at http://nces.ed.gov/Effectiveness of Blast Furnace Slags as Agricultural Liming Materials on Three Soil TypesAgricultural Data7Treatment, Soil type, Corn yieldCarter, O. R., Collier, B. L., & Davis, F. L. (1951). Blast furnace slags as agricultural liming materials. Agronomy Journal, 43, 430-433. Quoted in Cook, R. D., & Weisberg, S. (1982). Residuals and influence in regression. New York: Chapman and Hall.Emergency Calls to the New York Auto Club in January 1993 and January 1994Auto Calls28Date, Emergency road service calls answered, Forecast high temperature, Forecast low temperature, Daily high temperature, Daily low temperature, Rain forecast, Snow forecast, Type of day, Year, Sunday, Subzero temperatureNew York Motorist. (March 1994). Automobile Club of New York. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Equal Educational Opportunity (EEO) Data; Standardized IndexesEEO Data70Family, Peer, School AchievementChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Eruption Durations and Intereruption Times for the "Old Faithful" Geyser in Yellowstone National ParkOld Faithful222Date, Duration of eruption, Time until next eruptionWeisberg, S. (1985). Applied linear regression (2nd ed.). New York: John Wiley. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Excretion of Steroids in Patients with Cushing's SyndromeCushings Syndrome21 Type of Cushings syndrome, Levels of tetrahydrocortisone, Levels of pregnanetriolAitchison, J., & Dunsmore, I. R. (1975). Statistical prediction analysis. Cambridge: Cambridge University Press. Quoted in Christensen, R. (1990). Log-linear models. New York: Springer-Verlag.Financial Ratios of Solvent and Bankrupt FirmsFinancial Ratios66(working capital)/(total assets), (retained earnings)/(total assets), (earnings before interest and taxes)/(total assets), (market-value equity)/(book value of total liabilities), sales/(total assets), bankruptcy statusChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Forced Expiratory Volume of Smokers and Non-smokersFEV654Age, Forced Expiratory Volume (FEV), Height, Sex, Smoking statusRosner, B. (1999), Fundamentals of Biostatistics, 5th Ed., Pacific Grove, CA: Duxbury. Quoted in Kahn, M. (2005). An exhalent problem for teaching statistics. Journal of Statistics Education, 13(2).Fuel Consumption and Automotive VariablesFuel Consumption30Miles/gallon, Displacement, Horsepower, Torque, Compression ratio, Rear axle ratio, Carburetor (barrels), Number of transmission speeds, Overall length, Width, Weight, Type of transmissionMotor Trend magazine, 1975. Quoted in Chatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Gesell Adaptive Score and Age at First WordFirst Word21Age at first word, Gesell adaptive scoreMickey, M. R., Dunn, O. J., & Clark, V. (1967). Note on the use of stepwise regression in detecting outliers. Computers & Biomedical Research, 1, 105-9. Quoted in Cook, R. D., & Weisberg, S. (1982). Residuals and influence in regression. New York: Chapman and Hall.Graduate Admissions at BerkeleyBerkeley Graduate Admissions4526Department, Gender, Admission statusBickel, P. J., Hammel, E. A., & O'Conner, J. W. (1975). Sex bias in graduate admissions: Data from Berkeley. Science, 187, 398-404. Quoted in Christensen, R. (1990). Log-linear models. New York: Springer-Verlag.Jet Fighter DataJet Fighter22Aircraft ID, First flight date, Specific power, Flight range factor, Payload, Sustained load factor, Carrier capabilityStanley, W., & Miller, M. (1979). Measuring technological change in jet fighter aircraft. Report No. R-2249-AF. Santa Monica: Rand Corp. Quoted in Cook, R. D., & Weisberg, S. (1982). Residuals and influence in regression. New York: Chapman and Hall.Lead Rating and News Rating of Television DataTelevision Ratings30Lead rating, News ratingChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Length of Computer Service Calls and Number of Units RepairedService Calls 114Units, MinutesChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Length of Computer Service Calls and Number of Units Repaired--Expanded SampleService Calls 224Units, MinutesChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Length of Visits to msnbc.com on September 28, 1999msnbclength50,000Length of visitInternet Information Server logs for msnbc.com and news-related portions of msn.com. Quoted by Sanchez, J. and He, Y. (2005). Internet data analysis for the undergraduate statistics curriculum. Journal of Statistics Education, 13(3).Leukemia Data for Patients Diagnosed as AG PositiveLeukemia Data AG Positive17White blood cell count, Survival timeFeigl, P., & Zelen, M. (1965). Estimation of exponential probabilities with concomitant information. Biometrics, 21, 826-838. Quoted in Cook, R. D., & Weisberg, S. (1982). Residuals and influence in regression. New York: Chapman and Hall.Leukemia Data for Patients Diagnosed as AG Positive or AG NegativeLeukemia Data30White blood cell count, AG status, Number of patients surviving at least 52 weeks, Number of patients in each combination of WBC and AGFeigl, P., & Zelen, M. (1965). Estimation of exponential probabilities with concomitant information. Biometrics, 21, 826-838. Quoted in Cook, R. D., & Weisberg, S. (1982). Residuals and influence in regression. New York: Chapman and Hall.Los Angeles Heart Study DataChapman Data200Age, Systolic blood pressure, Diastolic blood pressure, Cholesterol, Height, Weight, Coronary incidentDixon, W. J., & Massey, F. J., Jr. (1983). Introduction to statistical analysis. New York: McGraw-Hill. Quoted in Christensen, R. (1990). Log-linear models. New York: Springer-Verlag.Lug Counts from Vineyard Harvest by Row and Year of HarvestLug Counts52Row number, Number of lugs for 1983, Number of lugs for 1984, Number of lugs for 1985, Number of lugs for 1986, Number of lugs for 1987, Number of lugs for 1988, Number of lugs for 1989, Number of lugs for 1990, Number of lugs for 1991Barnhill family archives, 1976-1991. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Major League Baseball Hall of FameMLBHOF1340Player name, Number of seasons played, Games played, Official at-bats, Runs scored, Hits, Doubles, Triples, Home runs, Runs batted in, Walks, Strikeouts, Career batting average, On base percentage, Slugging percentage, Adjusted production, Batting runs, Adjusted batting runs, Runs created, Stolen bases, Times caught stealing, Stolen base runs, Fielding average, Fielding runs, Primary position played, Total player rating, Hall of Fame Status The Baseball Encyclopedia and Total Baseball. Quoted in Cochran, J. (2000). Career records for all modern position players eligible for the Major League Baseball Hall of Fame. Journal of Statistics Education, 8(2).Mayo Clinic Trial in Primary Biliary Cirrhosis (PBC) of the Liver, 1974-1984Cirrhosis312 (data given for 1945 visits)ID; Number of days between registration and the earlier of death, transplantion, or study analysis time in July, 1986; Death status; Drugs administered; Age; Sex; Number of days between enrollment and this visit date; Presence of ascites; Presence of hepatomegaly; Presence of spiders; Presence of edema; Serum bilirubin; Serum cholesterol; Albumin; Alkaline phosphatase; SGOT; Platelets; Prothrombin time; Histologic stage of diseaseFleming, T. R., & Harrington, D. P. (1991). Counting processes and survival analysis. New York: Wiley. Monte Carlo SimulationSample Monte Carlo Simulation Program.doc10,0007th Grade SAT-10:  SEQ CHAPTER \h \r 1Reading vocabulary, Reading comprehension, Reading total, Math concepts, Math problem solving, and Math totalSimulated data based on SAT-10 means, standard deviations, and correlationsMonthly Domestic Electricity Consumption at Different TemperaturesElectricity55Month of observation, Year of observation, Average daily usage, Average daily temperatureHandcock family archives, August 1989-February 1994. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Monthly Sunspots Numbers from 1740 to 1983Sunspots2820Year, Number of sunspots per month (January-December)http://www.bath.ac.uk/~mascc/sunspots.TSNumber of Deaths by Horsekicks in the Prussian Army from 1875-1894 for 14 CorpsHorsekick Deaths20Year, Corp1-Corp14, TotalAndrews, D. F., & Herzberg, A. M. (1985). Data. Springer-Verlag: New York. Accessed at Statlib, http://lib.stat.cmu.edu/datasets/Andrews/Number of Supervised Workers and Supervisors in 27 Industrial EstablishmentsNumber of Supervised Workers27Number of supervised workers, Number of supervisorsChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Number of Surviving Bacteria Following Exposure to 200-Kilovolt X-rays at 6-minute IntervalsBacteria Death Rates15Interval, Number of bacteriaChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Numbers of Reported Sexual Partners of a Sample of Males and FemalesSexual Partners3533Male, FemaleThe general social survey, 1989-1991. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Occupations of Family Heads for Families of Various Religious GroupsReligion and Occupation3966Religious affiliation, Occupation, Number for each categoryLazerwitz, B. (1961). A comparison of major United States religious groups. Journal of the American Statistical Association, 56, 568-579. Quoted in Christensen, R. (1990). Log-linear models. New York: Springer-Verlag.Perceptions of the New York City Subway SystemNew York Subway62Usage of subway, Cleanliness of stations, Cleanliness of trains, Safety in station, Safety on trains, Rush hour crowding in stations, Rush hour crowding on trains, In-station information, On-train announcements, Convenience of train stops, Convenience of train schedule, Speed of travel, Frequency of trains, Ease of token purchase, Ease of token collection, Police presence in stations, Police presence on trains, Availability of maps, Number of uses per weekSurvey conducted at the Leonard N. Stern School of Business, Spring 1994. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Performance of National Basketball Association GuardsNBA105Players name, Players height, Number of games appeared in, Total minutes played, Players age, Points scored per game, Assists per game, Rebounds per game, Percent of field goals made, Percent of free throws madeCohn, J. (1994). The pro basketball bible. San Diego: Basketball Books Ltd. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Presidential Election Data, 1916-1988Election19Year, Democratic share of the two-party vote, Party of incumbent, Party of incumbent running for election, Growth rate of real per capita GNP in the second and third quarters of the election year, Absolute value of the rate of inflation in the 2-year period prior to the electionFair, R. C. (1988). The effect of economic events on votes for president: 1984 update. Political Behavior, 10, 168-178. Quoted in Chatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Pricing the Cs of Diamond StonesDiamond Pricing308Carat, Color, Clarity, Certification body, Price in Singapore dollarsSingapore's Business Times, February 18, 2000. Quoted in Chu, S. (2001). Pricing the C's of diamond stones. Journal of Statistics Education, 9(2).Relationship Between Instructor's Evaluation of General Intelligence, Quality of Clothing, and School StandardIntelligence Clothing Standard1725Intelligence rating, Clothing rating, School standard, Number for each category (Dataset includes three partitioning tables)Gilby, W. H. (1911). On the significance of the teacher's appreciation of general intelligence. Biometrika, VII, 79-93. Quoted in Christensen, R. (1990). Log-linear models. New York: Springer-Verlag.Relationship Between STAR Reading and Math and SAT-9 Reading, Math, and LanguageSTAR150Gender, STAR reading scaled score, STAR math scaled score, SAT-9 reading scaled score, SAT-9 math scaled score, SAT-9 language scaled scoreRandomly generated dataSalary Survey Data of Computer Professionals in a Large CorporationSalary of Computer Pros46Education, Experience, Management responsibility, SalaryChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Sample of 200 Observations from SAT-10 Monte Carlo SimulationTemp 1200Reading total score, Reading vocabulary score, Reading comprehension score, Math total score, Math concepts score, Math problem solving scoreNational Office for Research on Measurement and Evaluation Systems (NORMES), University of ArkansasSAT-10 Monte Carlo Simulation DataSAT 10 Macro10,000Reading total score, Reading vocabulary score, Reading comprehension score, Math total score, Math concepts score, Math problem solving scoreNational Office for Research on Measurement and Evaluation Systems (NORMES), University of ArkansasScores for Students Expected to Reach 80% Mastery Criterion on a 45 item Test with 5 Options Per Item80% Mastery50ID, ScoreRandomly generated data based on the binomial distribution; corresponding data set found in Random Guessing.xlsScores for Students with Random Guessing on a 45 Item Test with 5 Options Per ItemRandom Guessing50ID, ScoreRandomly generated data based on the binomial distribution; corresponding data set found in 80% Mastery.xlsScores on a Multiple Choice and Open Response Literacy ExamLiteracy Test4999ID, Gender, Race, Free and reduced lunch participation, Performance class, Scaled score, Multiple choice items 1-24, Multiple choice scores for strands 1-3, Total multiple choice score, Open ended scores for strands 1-3, Total open ended score, Total raw scoreRandomly generated dataSimulated Scores for Grades 3-5 on Arkansas Math Benchmark ExamArkansas Math216Special services code, Free and reduced price lunch participation, Limited English proficiency classification, Race, Gender, Grade, Math proficiency class, Mobility status, Multiple choice score, Open response score, Total math raw score, Teacher, Multiple choice and open response scores by 5 math strands (Number Sense, Geometry, Measurement, Data Analysis, and Patterns and Algebraic Functions), Total math scaled scoreNational Office for Research on Measurement and Evaluation Systems (NORMES), University of ArkansasSleep in MammalsAnimal Sleep62Species of animal, Body weight, Brain weight, Slow wave ("nondreaming") sleep, Paradoxical ("dreaming") sleep, Total sleep, Maximum life span, Gestation time, Predation index, Sleep exposure index, Overall danger indexAllison, T., & Cicchetti, D. V. (1976). Sleep in mammals: Ecological and constitutional correlates. Science, 194, 732-734.State Expenditures on EducationState Education Expenditures50State, Number of residents per thousand living in urban areas in 1970, Per capita expenditure on education projected for 1975, Per capita income in 1973, Number of residents per thousand under 18 years of age in 1974, Geographic regionChatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.The Return on Stocks in Over the Counter Market and New York Stock Exchange, May 9-May 13, 1994NYSE OTC30Weekly return of NASDAQ stocks, Weekly return of NYSE stocksChatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Time of Birth, Sex, and Weight of 44 Babies Born in One Hospital in a 24 Hour PeriodBaby Boom44Time of birth, Sex, Birth Weight, Minutes after midnight of birthBrisbane Sunday Mail, Dec. 21, 1997. Quoted in Dunn, P. (1999). A simple dataset for demonstrating common distributions. Journal of Statistics Education, 7(3).U.S. Airport StatisticsAirports135Airport, City, Scheduled departures, Performed departures, Enplaned passengers, Enplaned revenue tons of frieght, Enplaned revenue tons of mailU.S. Federal Aviation Administration and Research and Special Programs Administration, 'Airport Activity Statistics' (1990). Submitted to the Journal of Statistics Education by Larry Winner.U.S. Senate Votes for Clinton RemovalImpeachment100Name of Senator, State of Senator, Vote on Article I, Vote on Article II, Number of votes for guilt, Political party affiliation, Degree of ideological conservativism, Percent of the vote Clinton received in 1996 in the Senators state, Year Senator is up for re-election, First-term Senatorhttp://usatoday.com/news/index/clinton/ senvote2.htm, http://www.conservative.org/new_ratings/1997/97senate-preview.htm, http://www.vote-smart.org. Data compiled for the Journal of Statistics Education by Alan Reifman.UK Total Monthly Air Passengers, 1949-1999Air Passengers612Month, Year, Total number of monthly passengershttp://www.bath.ac.uk/~mascc/Grubb.TSWidth and Length of Fourth Grade Students FeetKids Feet39Birth month, Birth year, Length of longer foot, Width of longer foot, Gender, Foot measured, Left- or right-handednessMeyer, M. C. (2006). Wider shoes for wider feet? Journal of Statistics Education, 14(1). Data collected by the author in a fourth grade classroom in Ann Arbor, MI.Wind Chill Factor: Windspeed and TemperatureWind Chill120Actual air temperature, Wind speed, Wind chill factor (Variables presented in list and matrix format)National Weather Service; Museum of Science of Boston. Quoted in Chatterjee, S., & Price, B. (1991). Regression analysis by example (2nd ed.). New York: John Wiley.Yearly Employment Rates in the U.S. of 25- to 34-Year Old Males with 9-11 Years of SchoolingPercent Employed20Year, Percent of males employedThe Condition of Education (1991). U.S. Department of Education. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.Yield (%) on British short term government securities in successive months from about 1950 to about 1971Government Securities240Year, Yield per month (January-December)http://www.bath.ac.uk/~mascc/yield.TSYields from Vineyard Harvest by Row Number and Year of Harvest, 1983-1991Harvest Yield468Harvest year, Row of vines, Yield of grapesBarnhill family archives, 1976-1991. Quoted in Chatterjee, S., Handcock, M. S., & Simonoff, J. S. (1995). A casebook for a first course in statistics and data analysis. New York: John Wiley.  SEQ CHAPTER \h \r 1Sample Monte Carlo Simulation Program data corr1(type= corr); infile cards missover; input _type_ $ _name_ $ v1-v6; cards; mean . 668.4 680.2 663.3 668.6 666.2 672.2 std . 39.1 48.8 39.1 37.9 37.6 48.1 n . 15000 15000 15000 15000 15000 15000 corr v1 1.00 corr v2 .91 1.00 corr v3 .96 .78 1.00 corr v4 .71 .65 .68 1.00 corr v5 .69 .64 .66 .95 1.00 corr v6 .64 .57 .62 .93 .77 1.00 ; run; proc factor data=corr1 nfact=6 outstat=t1 noprint; var v1-v6; run; title "Simulation Data for Classroom Models"; proc iml; start sim1; use work.t1; read all var {v1 v2 v3 v4 v5 v6} into x12; n=10000; x11= {668.4 680.2 663.3 668.6 666.2 672.2}; xx12= {39.1 48.8 39.1 37.9 37.6 48.1}; g11= x12[13:18,]`; a1= rannor(j(n, 6, 1)); a1_t= t(a1); s_hat= g11*a1_t; stand= t(s_hat); m1= x11[1,1]; m2= x11[1,2]; m3= x11[1,3]; m4= x11[1,4]; m5= x11[1,5]; m6= x11[1,6]; s1= xx12[1,1]; s2= xx12[1,2]; s3= xx12[1,3]; s4= xx12[1,4]; s5= xx12[1,5]; s6= xx12[1,6]; col_g1= m1 + s1*stand[,1]; col_g2= m2 + s2*stand[,2]; col_g3= m3 + s3*stand[,3]; col_g4= m4 + s4*stand[,4]; col_g5= m5 + s5*stand[,5]; col_g6= m6 + s6*stand[,6]; n_data= col_g1||col_g2||col_g3||col_g4||col_g5||col_g6; create sim1_data from n_data[colname= {x1 x2 x3 x4 x5 x6}]; append from n_data; finish sim1; run sim1; data sample; set sim1_data; x1= round(x1, 1); x2= round(x2, 1); x3= round(x3, 1); x4= round(x4, 1); x5= round(x5, 1); x6= round(x6, 1); run; proc corr data= sample; run; proc surveyselect data=sample sampsize= 200 out= temp1; run; Appendix A Example Univariate Output for Arkansas Math.xls The UNIVARIATE Procedure Variable: s3MtScSc (Mathematics Scaled Score) Moments N 216 Sum Weights 216 Mean 223.013889 Sum Observations 48171 Std Deviation 88.260106 Variance 7789.84632 Skewness -0.3278101 Kurtosis -0.1406821 Uncorrected SS 12417619 Corrected SS 1674816.96 Coeff Variation 39.576058 Std Error Mean 6.00533957 Basic Statistical Measures Location Variability Mean 223.0139 Std Deviation 88.26011 Median 226.0000 Variance 7790 Mode 375.0000 Range 375.00000 Interquartile Range 115.50000 Tests for Location: Mu0=0 Test -Statistic- -----p Value------ Student's t t 37.13593 Pr > |t| <.0001 Sign M 107 Pr >= |M| <.0001 Signed Rank S 11502.5 Pr >= |S| <.0001 Quantiles (Definition 5) Quantile Estimate 100% Max 375.0 99% 375.0 95% 375.0 90% 341.0 75% Q3 286.0 50% Median 226.0 25% Q1 170.5 10% 115.0 5% 51.0 1% 9.0 0% Min 0.0 Example Univariate Output for Arkansas Math.xls The UNIVARIATE Procedure Variable: s3MtScSc (Mathematics Scaled Score) Extreme Observations ----Lowest---- ----Highest--- Value Obs Value Obs 0 159 375 168 0 113 375 171 9 146 375 183 10 133 375 198 14 134 375 214 Stem Leaf # Boxplot 36 47255555555555555 17 | 34 12671 5 | 32 033684 6 | 30 12477789267788999 17 | 28 0035772345899 13 +-----+ 26 134447778899334578 18 | | 24 012345612223359 15 | | 22 00225669999123445677889 23 *--+--* 20 011268012334577889 18 | | 18 0001122557788901333489 22 | | 16 01123678012457899 17 +-----+ 14 0245799004569 13 | 12 02702456 8 | 10 3577 4 | 8 10347 5 | 6 614 3 | 4 718 3 | 2 364 3 | 0 009045 6 | ----+----+----+----+--- Multiply Stem.Leaf by 10**+1 Example Univariate Output for Arkansas Math.xls The UNIVARIATE Procedure Variable: s3MtScSc (Mathematics Scaled Score) Normal Probability Plot 370+ ****** * * | **+ | *** | **** | *** | *** | *** | **** | *** 190+ **** | ***+ | *** | **+ | *+ | +*** | ++** | ++ ** | +++ ** 10+*** *** +----+----+----+----+----+----+----+----+----+----+ -2 -1 0 +1 +2  Example Correlation from Literacy Test.xls The CORR Procedure 3 Variables: Scaled_Score Total_Open_Ended Total_Multiple_Choice Simple Statistics Variable N Mean Std Dev Sum Minimum Maximum Scaled_Score 4999 212.60152 30.56291 1062795 14.00000 379.00000 Total_Open_Ended 4999 28.45009 13.00161 142222 0 48.00000 Total_Multiple_Choice 4999 30.25805 10.41199 151260 0 48.00000 Simple Statistics Variable Label Scaled_Score Scaled Score Total_Open_Ended Total_Open_Ended Total_Multiple_Choice Total_Multiple_Choice Pearson Correlation Coefficients, N = 4999 Prob > |r| under H0: Rho=0 Total_ Total_ Scaled_ Open_ Multiple_ Score Ended Choice Scaled_Score 1.00000 0.83332 0.80558 Scaled Score <.0001 <.0001 Total_Open_Ended 0.83332 1.00000 0.71297 Total_Open_Ended <.0001 <.0001 Total_Multiple_Choice 0.80558 0.71297 1.00000 Total_Multiple_Choice <.0001 <.0001 Example ANOVA Output for Literacy Test.xls The GLM Procedure Class Level Information Class Levels Values Race 5 African-American Asian/Pacific Islander Hispanic Other White Number of Observations Read 4999 Number of Observations Used 4999 Example ANOVA Output for Literacy Test.xls The GLM Procedure Dependent Variable: Scaled_Score Scaled Score Sum of Source DF Squares Mean Square F Value Pr > F Model 4 314682.210 78670.553 90.24 <.0001 Error 4994 4353906.018 871.827 Corrected Total 4998 4668588.228 R-Square Coeff Var Root MSE Scaled_Score Mean 0.067404 13.88829 29.52672 212.6015 Source DF Type I SS Mean Square F Value Pr > F Race 4 314682.2102 78670.5526 90.24 <.0001 Source DF Type III SS Mean Square F Value Pr > F Race 4 314682.2102 78670.5526 90.24 <.0001 Example ANOVA Output for Literacy Test.xls The GLM Procedure Tukey's Studentized Range (HSD) Test for Scaled_Score NOTE: This test controls the Type I experimentwise error rate. Alpha 0.05 Error Degrees of Freedom 4994 Error Mean Square 871.8274 Critical Value of Studentized Range 3.85915 Comparisons significant at the 0.05 level are indicated by ***. Difference Race Between Simultaneous 95% Comparison Means Confidence Limits Asian/Pacific Islander - White 3.7908 -7.8015 15.3831 Asian/Pacific Islander - Other 6.0878 -8.1354 20.3110 Asian/Pacific Islander - Hispanic 18.1487 5.5481 30.7493 *** Asian/Pacific Islander - African-American 21.9304 10.1821 33.6786 *** White - Asian/Pacific Islander -3.7908 -15.3831 7.8015 White - Other 2.2970 -6.1704 10.7644 White - Hispanic 14.3579 9.0501 19.6658 *** White - African-American 18.1396 15.4157 20.8634 *** Other - Asian/Pacific Islander -6.0878 -20.3110 8.1354 Other - White -2.2970 -10.7644 6.1704 Other - Hispanic 12.0609 2.2583 21.8636 *** Other - African-American 15.8426 7.1629 24.5223 *** Hispanic - Asian/Pacific Islander -18.1487 -30.7493 -5.5481 *** Hispanic - White -14.3579 -19.6658 -9.0501 *** Hispanic - Other -12.0609 -21.8636 -2.2583 *** Hispanic - African-American 3.7817 -1.8587 9.4220 African-American - Asian/Pacific Islander -21.9304 -33.6786 -10.1821 *** African-American - White -18.1396 -20.8634 -15.4157 *** African-American - Other -15.8426 -24.5223 -7.1629 *** African-American - Hispanic -3.7817 -9.4220 1.8587 Example ANOVA Output for Literacy Test.xls The GLM Procedure Level of ---------Scaled_Score-------- Race N Mean Std Dev African-American 1174 199.436968 26.8714035 Asian/Pacific Islander 49 221.367347 31.5401159 Hispanic 247 203.218623 29.1798596 Other 93 215.279570 31.5365094 White 3436 217.576542 30.3219353     PAGE  PAGE 6 Table 1. 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