Difference scores are usually used with:
A)a t test for a single sample
B)a t test for dependent means
C)a t test for independent means
D)all of the above

Question

Quizplus · Accepted Answer

Difference scores, also known as paired scores, are used to compare the means of two related groups, which corresponds to a t test for dependent means. This type of t test is used when the same individuals are measured twice or when each individual in one group is matched with a different individual in the other group. It is not appropriate to use difference scores with a t test for a single sample or a t test for independent means.

Difference Scores Are Usually Used With