Week 9 Mini Individual Assignment_v2

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School

University of Illinois, Urbana Champaign *

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542

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Statistics

Date

Apr 3, 2024

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docx

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Uploaded by JusticeThunder11733

Week 9 Mini Individual Assignment (4 points) Instruction: 1. Download the “PHQ-9 score.xlsx” file a. Conduct independent samples t-test b. Conduct Mann Whitney U test (Wilcoxon rank sum test) c. Conduct paired t-test d. Conduct Wilcoxon signed rank test 2. Download the “hsb2_v2.xlsx” file a. Conduct ANOVA b. Conduct Kruskal-Wallis test Your Name: Conduct independent samples t-test to answer the following questions. Is the mean depression (PHQ-9) score different between the treatment group and the control group at the baseline (pre)? - Report the statistical significance: - Report the nature of the association (report the mean and standard deviation of each group): - Report whether the size the difference is practically important (large enough to be excited?): Is the mean depression (PHQ-9) score different between the treatment group and the control group after the intervention (post)? - Report the statistical significance: - Report the nature of the association (report the mean and standard deviation of each group): - Report whether the size the difference is practically important (large enough to be excited?): Conduct Mann Whitney U test (Wilcoxon rank sum test) to answer the following questions. Is the mean depression (PHQ-9) score different between the treatment group and the control group at the baseline (pre)? - Report the statistical significance: - Report the nature of the association (report the mean and standard deviation of each group): - Report whether the size the difference is practically important (large enough to be excited?):

Is the mean depression (PHQ-9) score different between the treatment group and the control group after the intervention (post)? - Report the statistical significance: - Report the nature of the association (report the mean and standard deviation of each group): - Report whether the size the difference is practically important (large enough to be excited?): Conduct paired t-test to answer the following questions. Is the mean depression (PHQ-9) score changed between the pre- and the post- tests in the treatment group? - Report the statistical significance: - Report the nature of the association (report the mean and standard deviation of each test): - Report whether the size the difference is practically important (large enough to be excited?): Is the mean depression (PHQ-9) score changed between the pre- and the post- test in the control group? - Report the statistical significance: - Report the nature of the association (report the mean and standard deviation of each test): - Report whether the size the difference is practically important (large enough to be excited?): Conduct Wilcoxon signed rank test to answer the following questions. Is the mean depression (PHQ-9) score changed between the pre- and the post- tests in the treatment group? - Report the statistical significance: - Report the nature of the association (report the mean and standard deviation of each test): - Report whether the size the difference is practically important (large enough to be excited?): Is the mean depression (PHQ-9) score changed between the pre- and the post- test in the control group? - Report the statistical significance: - Report the nature of the association (report the mean and standard deviation of each test): - Report whether the size the difference is practically important (large enough to be excited?):

Conduct ANOVA to answer the following questions. Do the mean science scores differ by the program type (academic, general, vocational)? - Report the statistical significance: - Report the nature of the association (report the mean and standard deviation of each group): - Report the post-hoc test results: Conduct Kruskal-Wallis test to answer the following questions. Do the mean science scores differ by the program type (academic, general, vocational)? - Report the statistical significance: - Report the nature of the association (report the mean and standard deviation of each group): - Report the post-hoc test results:

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