Distribution-free tests are used when _____.
A)samples are larger than 40
B)parametric assumptions are markedly violated
C)data are normally distributed
D)none of these

Question

Quizplus · Accepted Answer

Distribution-free tests, also known as nonparametric tests, are used when traditional parametric assumptions (such as normality, equal variance, or independence) are violated. These tests do not require the assumption of a particular distribution for the population being sampled, and are typically used with smaller sample sizes or when the data do not meet traditional assumptions. The size of the sample, as in option A, is not a criteria for choosing distribution-free tests. Option C is incorrect because distribution-free tests do not assume normality.

Distribution-Free Tests Are Used When _____