The nonparametric alternative to the one-way ANOVA, independent samples design is the
A) Wilcoxon matched-pairs signed-ranks test.
B) Mann-Whitney test.
C) Kruskal-Wallis test.
D) Spearman test.

Question

Quizplus · Accepted Answer

The Kruskal-Wallis test is a nonparametric alternative to the one-way ANOVA for independent samples design when the assumption of normality is not met. The Wilcoxon matched-pairs signed-ranks test and the Mann-Whitney test are for dependent and independent samples with two groups, respectively. The Spearman test is for correlation, not for comparing means between groups. Therefore, the best choice is C, the Kruskal-Wallis test.

The Nonparametric Alternative to the One-Way ANOVA, Independent Samples Design