The sum of deviations around the mean:
A) is usually a negative number.
B) depends on the number of scores.
C) depends on the range of scores.
D) is one.
E) is zero.

Question

Quizplus · Accepted Answer

The sum of deviations around the mean is always zero, because by definition, the mean is the point that minimizes the sum of squared deviations. Therefore, some deviations will be positive and some will be negative, but their sum will always be zero.

The Sum of Deviations Around the Mean