A Kruskal-Wallis test is always:
A) used with only one sample.
B) used with exactly two samples.
C) a test that rejects H₀ for large values of the test statistic.
D) a test that rejects H₀ for very large or very small values of the test statistic.

Question

Quizplus · Accepted Answer

The Kruskal-Wallis test is a non-parametric method used to determine if there are statistically significant differences between two or more groups of an independent variable on a continuous or ordinal dependent variable. It rejects the null hypothesis (H₀) for large values of the test statistic, indicating that at least one of the group medians is different from the others.

A Kruskal-Wallis Test Is Always