The t test for correlated means should be used when
A) the group possessing the characteristic of interest and the comparison group are randomly selected.
B) subgroups are to be formed within the group possessing the characteristic of interest.
C) the group possessing the characteristic of interest and the comparison group are matched on another variable.
D) researchers wish to determine the magnitude of the relationship between independent and dependent variables.

Question

Quizplus · Accepted Answer

The t-test for correlated means is appropriate when the two groups being compared are matched or paired on some variable, ensuring that the comparison between the groups takes into account the matching variable, which is meant to control for its effects.

The T Test for Correlated Means Should Be Used When