According to the rationale for nonparametric tests, the null hypothesis says that the sum of the ranks of Population A will be _______ to the sum of the ranks of Population B. A) equal B) unequal, with A A D) unequal, with the direction being chosen by the researcher.

Question

According to the rationale for nonparametric tests, the null hypothesis says that the sum of the ranks of Population A will be _______ to the sum of the ranks of Population B.
A) equal
B) unequal, with A < B
C) unequal, with B > A
D) unequal, with the direction being chosen by the researcher.

Quizplus · Accepted Answer

Nonparametric tests, such as the Mann-Whitney U test, often involve comparing the ranks of two populations without making assumptions about the shape of their distributions. The null hypothesis typically posits that there is no difference between the populations, which implies that the sum of the ranks for Population A will be equal to the sum of the ranks for Population B.

According to the Rationale for Nonparametric Tests, the Null Hypothesis