In conducting a Kruskal-Wallis one-way analysis of variance,the test statistic is assumed have approximately which distribution when the null hypothesis is true?
A)A t-distribution
B)An F-distribution
C)A normal distribution
D)A chi-square distribution

Question

Quizplus · Accepted Answer

When the null hypothesis is true, the Kruskal-Wallis test statistic has an approximate chi-square distribution with k-1 degrees of freedom, where k is the number of groups being compared. Therefore, the best choice is D, a chi-square distribution.

In Conducting a Kruskal-Wallis One-Way Analysis of Variance,the Test Statistic