Variance within a sample is used as part of the calculation for which of the following statistical tests?
A) Chi-square
B) F-test
C) T-test
D) both F-test and t-test

Question

Quizplus · Accepted Answer

Variance within a sample is a crucial part of the calculations for both the F-test and the t-test. The F-test is used to compare the variances of two populations, and it relies on the variance within samples to do so. The t-test, used to determine if there are significant differences between the means of two groups, also uses the variance within samples to estimate the standard error of the difference between means.

Variance Within a Sample Is Used as Part of the Calculation