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)small variance for the difference scores and a large standard error
C)large variance for the difference scores and a small standard error
D)large variance for the difference scores and a large standard error

Question

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)​small variance for the difference scores and a large standard error
C)​large variance for the difference scores and a small standard error
D)​large variance for the difference scores and a large standard error

Quizplus · Accepted Answer

If the difference between the treatments is consistent from one participant to another, then the difference scores should show little variation (small variance), and the standard error should be small as well. This indicates that the treatment effect is reliable and consistent across the sample.

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