The mean of a column of difference scores is equal to
A) the ratio of the means of the individual columns.
B) the difference between the means of the individual columns.
C) the sample size.
D) We can't tell without calculating it for a set of data.

Question

Quizplus · Accepted Answer

The mean of a column of difference scores is calculated by subtracting the mean of one column from the mean of another column. This results in the difference between the means of the individual columns.

The Mean of a Column of Difference Scores Is Equal