The Kruskal-Wallis rank test for differences in more than two medians is a nonparametric alternative to
A) ANOVA F test for completely randomized experiments.
B) Student's t test for related samples.
C) Student's t test for independent samples.
D) Wilcoxon rank sum test for differences in two medians.

Question

Quizplus · Accepted Answer

The Kruskal-Wallis rank test is a nonparametric test used to compare the medians of three or more independent groups. It is an alternative to the traditional ANOVA F test for completely randomized experiments, which assumes normality and equal variances. Since the Kruskal-Wallis test does not make assumptions about normality, it is a more robust test when these assumptions are violated. Therefore, the best choice is A.

The Kruskal-Wallis Rank Test for Differences in More Than Two