Chapter 4 page 31 scatter plots and lines of fit

    • What is the difference between a scatter plot and a correlation?

      A scatterplot displays the strength, direction, and form of the relationship between two quantitative variables. A correlation coefficient measures the strength of that relationship. The correlation r measures the strength of the linear relationship between two quantitative variables.

    • How are GPA and motivation scores displayed on the scatterplot?

      GPA scores are displayed on the horizontal axis and motivation scores are displayed on the vertical axis.  Each dot on the scatterplot represents one individual from the data set. The location of each point on the graph depends on both the GPA and motivation scores.

    • What is a line of best fit in statistics?

      A line of best fi t is a line drawn on a scatter plot that is close to most of the data points. It can be used to estimate data on a graph. EXAMPLE 3 Finding a Line of Best Fit. The table shows the weekly sales of a DVD and the number of weeks since its release.

    • [PDF File]Regression and Median-Fit Lines

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      Lesson 4-6 Chapter 4 39 Glencoe Algebra 1 ... Find an equation for the median-fit line. y = 1767x + 62,067 b. How many diapers should SureSave anticipate selling in 2011? about 70,900 5. ... Regression and Median-Fit Lines 4-6. Created Date: 2/6/2013 12:41:58 AM ...

    • [PDF File]LESSON Reteach 12-7 Lines of Best Fit

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      12-7 Lines of Best Fit LESSON 1. neither 3. negative 2. positive 4. positive Tell whether a line of best fit for each scatter plot would have a positive or negative slope. If a line of best fit would not be appropriate for the data, write neither. 0 5 10 15 20 25 0 10 20 30 40 0 5 10 15 0 50 100 150 0 10 20 30 50 40 1000 1050 1100 1150 50 100 ...

    • [PDF File]4.5 Analyzing Lines of Fit - Login Page

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      4.5 Analyzing Lines of Fit For use with Exploration 4.5 Name _____ Date _____ Essential Question How can you analytically find a line of best fit for a scatter plot? Go to BigIdeasMath.com for an interactive tool to investigate this exploration. Work with a partner. The scatter plot shows the median

    • [PDF File]NAME DATE PERIOD 4-5 Word Problem Practice

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      Scatter Plots and Lines of Fit Cost of Raising a Child Born in 2003 Child’s Age 3 6 9 12 15 Annual Cost ($) 10,700 11,700 12,600 15,000 16,700 Average Length of Major League Baseball Games Year ‘92 ‘94 ‘96 ‘98 ‘00 ‘02 ‘04 Time (min) 170 174 171 168 178 172 167 4-5

    • [PDF File]New SA Created for the SAT - Glassboro Public Schools

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      Answers and Explanations 31 Chapter 3: Functions and Linear Equations 37 3-1 Relations and Functions 37 ... 8-4 Scatter Plots 127 8-5 Populations, Samples, and Random Selection 129 ... Chapter 16: Lines and Angles 267 16-1 Lines, Segments, and Rays 267 ...

    • [PDF File]Scatterplots and Correlation Notes - UWG | Home

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      Based on the criteria listed on the previous page, the value of r in this case (r = 0.62) indicates that there is a positive, linear relationship of moderate strength between achievement motivation and GPA. 0 10 20 30 40 50 60 70 80 90 100 0 0.5 1 1.5 2 2.5 3 3.5 4

    • [PDF File]7.3 Scatter Plots and Lines of Best Fit - Login Page

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      290 Chapter 7 Data Analysis and Displays 7.3 Lesson Lesson Tutorials Scatter Plot A scatter plot is a graph that shows the relationship between two data sets. The two sets of data are graphed as ordered pairs in a coordinate plane. Key Vocabulary scatter plot, p. 290 line of best fi t, p. 292 EXAMPLE 1 Interpreting a Scatter Plot The scatter plot at the left shows the total fat (in grams) and

    • [PDF File]NAME DATE PERIOD 4-5 Study Guide and Intervention

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      Chapter 4 30 Glencoe Algebra 1 Study Guide and Intervention Scatter Plots and Lines of Fit Investigate Relationships Using Scatter Plots A scatter plot is a graph in which two sets of data are plotted as ordered pairs in a coordinate plane. If y increases as x increases, there is a positive correlation between x and y. If y decreases as x ...

    • [PDF File]4%2D5 Scatter Plots and Lines of Fit

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      D Make a scatter plot and determine what relationship exists, if any, in the data. Identify the independent and the dependant variables. E Draw a line of fit for the scatter plot. F Write an equation in slope-intercept form for the line of fit. G Predict what the median age of females when they are first married will be in …

    • Statistical Analysis, Modeling, and Algorithms for ...

      List of Figures Figure 1 Four Parameter Logistic Model with A=5, B=5.5, C=5, D=5 . . . . . . .7 Figure 2 The Effect of Parameters A in five parameters logistic model based

    • [PDF File]7.3 Scatter Plots and Lines of Best Fit - Login Page

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      Section 7.3 Scatter Plots and Lines of Best Fit 293 7.3 Exercises 1. VOCABULARY What type of data are needed to make a scatter plot? Explain. 2. WRITING Explain why a line of best fi t is helpful when analyzing data. 9 +(- 6 )= 3 3 +(- 3 )= 4 +(- 9 )= 9 +(- 1 )= 3. BLUEBERRIES The table shows the weights y of x pints of blueberries. Number of ...

    • [PDF File]5-7 Scatter Plots and Trend Lines

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      4 26 5 28 6 31 1 18 3 24 4 30 6 33 Practice L3 L4 L2 L1 L3 352 Chapter 6 Linear Equations and Their Graphs Find the equation of the line of best fit. Let 95 correspond to 1995 and 103 correspond to 2003.What is the correlation coefficient to three decimal places? Find an equation of a reasonable trend line for each scatter plot. 1. 2. 5.

    • [PDF File]4%2D5 Scatter Plots and Lines of Fit

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      D Make a scatter plot and determine what relationship exists, if any, in the data. Identify the independent and the dependant variables. E Draw a line of fit for the scatter plot. F Write an equation in slope-intercept form for the line of fit. G Predict what the median age of females when they are first married will be in 2016.

    • [PDF File]Scatter Plots and Equations of Lines 5.4 - Weebly

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      Scatter Plots and Equations of Lines 350 Chapter 6 Linear Equations and Their Graphs Lesson 1-6 Use the data in each table to draw a scatter plot. 1–2. See back of book. 1. 2. New Vocabulary • line of best fit • correlation coefficient x 1 y 2 3 4 21 9 5 7 12 15 x 1 y 2 3 4 2 9 5 25 8 3 What You’ll Learn • To write an equation for a ...

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