A statistics professor wanted to test whether the grades on statistics test were the same for upper and lower classmen. The professor took a random sample of size 12 from each and conducted a test determining that the variances were equal. For this situation, the professor should use a matched pairs t-test.

Question

Quizplus · Accepted Answer

A matched pairs t-test is used when two samples are not independent and are matched or paired (e.g. before and after treatment measurements on the same subjects). In this situation, the two groups being compared (upper and lower classmen) are independent, so a two-sample t-test would be more appropriate.

A Statistics Professor Wanted to Test Whether the Grades on Statistics