The Kruskal-Wallis test statistic can be approximated by a Chi-squared distribution with k - 1 degrees of freedom (where k is the number of populations) whenever the sample sizes are all greater than or equal to:
A) 30
B) 20
C) 10
D) 5

Question

Quizplus · Accepted Answer

The Kruskal-Wallis test can be approximated by a Chi-squared distribution with k - 1 degrees of freedom when the sample sizes are all greater than or equal to 5. Therefore, the best choice is D.

The Kruskal-Wallis Test Statistic Can Be Approximated by a Chi-Squared