A measure of the average squared distance of scores from the mean is called the
A) range.
B) IQR.
C) variance.
D) sum of squares.

Question

Quizplus · Accepted Answer

The measure of the average squared distance from the mean is the variance. The range is simply the difference between the highest and lowest score, while the IQR is a measure of the spread of the middle 50% of the data. The sum of squares is a term used in calculating variance, but it is not the measure itself. Therefore, the best choice is C.

A Measure of the Average Squared Distance of Scores from the Mean