When is it appropriate to use the paired difference t-test?
A)When four samples are compared at once
B)When any two samples are compared
C)When two independent samples are compared
D)When two dependent samples are compared

Question

Quizplus · Accepted Answer

The paired difference t-test is used when two dependent samples are compared. This means that the samples are related in some way, such as being taken from the same individuals before and after an intervention or under different conditions. The test is used to determine if there is a significant difference between the means of the two related samples. Therefore, option D is the best choice. Options A and B are incorrect because they refer to comparing multiple or independent samples, whereas option C refers to comparing independent samples.

When Is It Appropriate to Use the Paired Difference T-Test