When would you use the Kruskal-Wallis test?
A) When data are normally distributed
B) When data are not normally distributed
C) When assumptions have not been violated
D) None of the above

Question

Quizplus · Accepted Answer

The Kruskal-Wallis test is a nonparametric test used to compare the medians of three or more independent groups when the assumption of normality is not met. It is used when the data are ordinal, interval or ratio scaled, and assumptions for parametric tests have not been met. Therefore, the correct choice is B, which states that the Kruskal-Wallis test is used when data are not normally distributed.

When Would You Use the Kruskal-Wallis Test