The sum of the deviations around the mean is:
A)greater than zero if data are right-skewed.
B)smaller when the units are smaller (e.g., milligrams versus kilograms).
C)always zero.
D)dependent on the sample size.

Question

Quizplus · Accepted Answer

By definition, the sum of deviations around the mean is always zero. This is because the deviations above and below the mean cancel out each other's signs. Therefore, choice (C) is the correct answer.

The Sum of the Deviations Around the Mean Is