Activity 30

MATH 216: Statistical Thinking

Activity 1: Quiz

  • What is the null hypothesis for the Mann-Whitney U test?

    1. The medians are equal
    2. The means are equal
    3. The variances are equal
    4. The distributions are identical

Activity 2: Group Height Analysis

Task: Compare heights using Wilcoxon Rank Sum:


    Wilcoxon rank sum test with continuity correction

data:  group1 and group2
W = 4, p-value = 0.09269
alternative hypothesis: true location shift is not equal to 0

Activity 3: Treatment Recovery Case Study

Solution:


    Wilcoxon signed rank test with continuity correction

data:  treatment_a and treatment_b
V = 1, p-value = 0.1041
alternative hypothesis: true location shift is not equal to 0

Activity 4: Exam Scores Analysis (From Slides)


    Wilcoxon rank sum test with continuity correction

data:  online and traditional
W = 85.5, p-value = 0.959
alternative hypothesis: true location shift is not equal to 0