If we are interested in testing to determine whether the center of three or more populations is equal when the data in the samples are ordinal, what is the appropriate test to conduct?
A) A t-test
B) An ANOVA
C) A Kruskal-Wallis
D) A Wilcoxon Matched-Pairs Sign Rank test

Question

Quizplus · Accepted Answer

The Kruskal-Wallis test is the appropriate non-parametric test for comparing the medians of three or more independent samples when the data are ordinal or when the assumptions of ANOVA are not met.

If We Are Interested in Testing to Determine Whether the Center