Which of the following is an assumption for computing the related-samples t test?
A) The population being sampled from is normally distributed.
B) The population variance of difference scores is unknown.
C) Samples are related or matched between groups, but not within groups.
D) All of these.

Question

Quizplus · Accepted Answer

All of the options listed are assumptions for computing the related-samples t test. Choice A: The assumption of normal distribution is required for computing the t-test. Choice B: The computation of the t-test involves calculating the variance of difference scores, which is unknown. Choice C: Samples are related or matched within groups, but not between groups. Therefore, all of these assumptions are required for computing the related-samples t test.

Which of the Following Is an Assumption for Computing the Related-Samples