An F distribution is useful for testing the null hypothesis that a set of sample data is normally distributed.

Question

Quizplus · Accepted Answer

An F distribution is actually used for testing the equality of variances of two populations or groups. It is not directly used for testing normality of data. However, there are certain tests that use the F distribution as a part of their calculation that can indirectly test for normality, such as the Shapiro-Wilk test.

An F Distribution Is Useful for Testing the Null Hypothesis