The sum of the cross-products indicates the extent to which two sets of scores _____.
A)vary from their mean
B)vary from the grand mean
C)covary
D)depart from individual variation

Question

Quizplus · Accepted Answer

The sum of the cross-products in a covariance calculation measures the extent to which two sets of scores (X and Y) covary or vary together. It shows the degree to which the scores in one set can be predicted from the scores in the other set. The other options are not correct because the sum of cross-products is not directly related to the mean, grand mean, or individual variation of the scores.

The Sum of the Cross-Products Indicates the Extent to Which