Significant difference statistics
[DOC File]Brian’s Quick and Easy Statistics Recipes
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To see if these differences lead to a difference in some interesting outcome you can do a two-sample t-test. This will tell you if the difference in the means is significant. If you have pre and post data you can do several analysis. First with the pre data you can see if the classes are evenly matched (if there is no significant difference).
[DOC File]Using SPSS for One-Sample Significant Difference Tests
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In this lab, we will analyze data using significant difference tests, in effort to see if a sample is representative of a population or not. In Part I, we will compare ratio data to a parent population. In Part II we will compare nominal data to a parent population. In both cases, statistics of the parent populations are assumed to be known as ...
[DOC File]Oklahoma City Community College
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In order to determine whether or not there is a significant difference between the hourly wages of two companies, the following data have been accumulated. Company A Company B. Sample size 80 60. Sample mean $6.75 $6.25. Sample standard deviation $1.00 $0.95. 20. Refer to Exhibit 10-2. A point estimate for the difference between the two sample ...
[DOC File]Chi-sq explanation
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There is no significant difference. The amount of difference between expected and actual data is likely just due to chance. Thus, we conclude that our sample does not support the hypothesis of a difference.
[DOC File]AP Statistics Murder Mystery
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First, answer the questions below. If at least two of the weapons differ (statistically significant difference) in “time to kill”, you can eliminate the weapon with the longest “time to kill.” Use an alpha of 0.10. SUMMARY STATISTICS
[DOC File]Notes on Writing Chapter 3 - B W Griffin
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There was a statistically significant difference, at the .05 level, in SAT verbal scores between females and males. There were no statistical differences, however, in SAT mathematics scores or grade point averages between the sexes. Descriptive statistics in Table 2 show that females scored higher on the SAT verbal subscale than did males.
[DOC File]AP Statistics
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(b) Construct and interpret a 99% confidence interval for the difference in mean daily alcohol consumption between drivers and conductors. (c) Do these data provide evidence of a significant difference in mean daily calorie consumption by drivers and conductors? Carry out an appropriate test to help answer this question. 12.
[DOCX File]AP Statistics Chapter 10 Homework
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AP Statistics Chapter 10 Homework. ... The report says that “for academic year earnings, a significant difference (P=.038) was found between the sexes, with men earning more than average. No difference (p=.476) was found between the earning of black and white students.” Explain both of these conclusions, for the effects of sex and of race ...
[DOCX File]Statistics
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There was no difference in the occurrence of primary outcome as the p value was 0.2, hazard ratio was 0.88 and the CI was 0.73 -1.06. There were no significant differences in the occurrence of secondary outcome except for total stroke and fatal stroke.
[DOCX File]Intellectus Statistics | Statistical Analysis Software for ...
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In other words, it is used to test that there is no significant difference between the size of 'k' dependent samples and the population from which these have been drawn. The Friedman test statistic is distributed approximately as chi-square, with (k - 1) degrees of freedom.
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