A researcher is using a repeatedmeasures study to evaluate t

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

Solution

The differences are consistent: hence, there is a small variance in the difference scores.

As the variance of the differences is small, then the standard error is also small. Thus, it is

OPTION A: a small variance for the difference scores and a small standard error [ANSWER]