Which of the following statements is correct regarding the Kruskal-Wallis test?
A) The Kruskal-Wallis test uses data that are ordinal or numerical and normal.
B) The Kruskal-Wallis test uses data that is numerical and normal.
C) The Kruskal-Wallis test uses data that are ordinal or numerical and non-normal.
D) None of these choices are correct.

Question

Quizplus · Accepted Answer

The Kruskal-Wallis test is a non-parametric test used to determine if there are differences in the medians of three or more groups. It does not assume that the data are normally distributed, but can be used with data that are either ordinal or numerical. Therefore, option C is the correct statement. Options A and B are incorrect as the Kruskal-Wallis test can be used with non-normal data. Option D is incorrect as option C is correct.

Which of the Following Statements Is Correct Regarding the Kruskal-Wallis