The variance of a group of scores is the same as the:
A)average of the squared deviations from the mean
B)sum of the squared deviations about the mean
C)average of the absolute deviations from the mean
D)sum of the absolute deviations from the median

Question

Quizplus · Accepted Answer

The formula for variance is the average of the squared deviations from the mean, which is (Σ(xi-μ)^2)/n, where xi is each score, μ is the mean, and n is the number of scores. Therefore, the variance is the same as the average of the squared deviations from the mean.

The Variance of a Group of Scores Is the Same