Suppose there is interest in comparing the median response time for three independent groups learning a specific task.The appropriate nonparametric procedure is
A)Wilcoxon Signed Rank Test.
B)Kruskal-Wallis Rank Test for Differences in Medians.
C)Wilcoxon Rank Sums Test.
D)Friedman rank test.

Question

Quizplus · Accepted Answer

The Kruskal-Wallis Rank Test for Differences in Medians is the appropriate nonparametric procedure for comparing the median response time for three or more independent groups. The Wilcoxon Signed Rank Test and Wilcoxon Rank Sums Test are appropriate for comparing the median response time of two independent groups, while the Friedman rank test is appropriate for testing differences in median response time for three or more related groups.

Suppose There Is Interest in Comparing the Median Response Time