How is the alternative hypothesis to be tested always stated in all applications of the Kruskal-Wallis test?
A) The locations of all k populations are the same.
B) The locations of all k populations differ.
C) At least two population locations are the same.
D) At least two population locations differ.

Question

Quizplus · Accepted Answer

The Kruskal-Wallis test is used to compare three or more independent samples to determine if there is a difference between the population medians. The alternative hypothesis is always that at least two population locations differ. Therefore, the best choice is D.

How Is the Alternative Hypothesis to Be Tested Always Stated