The Value of the Sum of the Squared Deviations from the Mean

Multiple Choice

The value of the sum of the squared deviations from the mean, i.e., $\Sigma ( x - \bar { x } ) ^ { 2 }$ must always be _____.

A) less than the mean
B) negative
C) either positive or negative, depending on whether the mean is negative or positive
D) at least zero