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

Question

Quizplus · Accepted Answer

The Kruskal-Wallis test is used to determine if there is a significant difference between the medians of two or more groups. The null hypothesis is that all groups have the same population median, while the alternative hypothesis is that at least two population locations differ. Therefore, the best choice is C.

Which of the Following Is the Alternative Hypothesis Tested in Applications