A researcher is using a repeated-measures study to evaluate the difference between two treatments.If the difference between the treatments is consistent from one participant to another,then the data should produce ______.
A)a small variance for the difference scores and a small standard error
B)a small variance for the difference scores and a large standard error
C)a large variance for the difference scores and a small standard error
D)a large variance for the difference scores and a large standard error

Question

Quizplus · Accepted Answer

A small variance for the difference scores would indicate that the difference between the treatments is consistent across participants. A small standard error would further indicate that the sample mean is a good estimate of the population mean, which is desirable in research. Therefore, a small variance for the difference scores and a small standard error would be optimal in this scenario.

A Researcher Is Using a Repeated-Measures Study to Evaluate the Difference