The sum of the differences between the scores of a distribution and the mean of the scores is always
A)0.
B)1.
C)the same as the number of cases.
D)none of the above

Question

Quizplus · Accepted Answer

By definition, the mean is the balance point of the distribution, so any difference between a data point and the mean has an equal and opposite difference on the other side of the mean. Therefore, the sum of the differences will always equal zero.

The Sum of the Differences Between the Scores of a Distribution