What type of test takes the magnitude of the data into consideration by using ranks?
A) runs test
B) z-test
C) Wilcoxon rank sum test
D) Kruskal-Wallis test

Question

Quizplus · Accepted Answer

The Wilcoxon rank sum test, also known as the Mann-Whitney U test, takes the magnitude of the data into consideration by using ranks. It compares two independent samples and tests whether their distributions differ significantly. Option A, runs test, is used to test randomness or independence in a sequence of categorical or binary data. Option B, z-test, is used to test the difference between two population means when the population standard deviation is known. Option D, Kruskal-Wallis test, is used to test whether three or more independent samples come from the same population or not, and it also uses ranks.

What Type of Test Takes the Magnitude of the Data