Analogous to analysis of variance,rejection of the null hypothesis when a nonparametric test is applied to more than two groups tells us only that at least two of the groups differ,but does not indicate the nature of the relationship.

Question

Quizplus · Accepted Answer

This statement is true. Nonparametric tests, such as the Kruskal-Wallis test, can tell us that there is a difference between at least two groups, but they do not provide information about which specific group(s) are different from each other, or the magnitude or direction of the difference. This is similar to the limitations of traditional ANOVA tests.

Analogous to Analysis of Variance,rejection of the Null Hypothesis When