Judy subtracts each score from the mean, squares each value, and then determines the mean of these squared values. Which measure of spread is Judy calculating?
A) the interquartile range
B) the crude range
C) the standard deviation
D) the variance

Question

Quizplus · Accepted Answer

Judy is calculating the variance, which is the average of the squared differences between each value and the mean.

Judy Subtracts Each Score from the Mean, Squares Each Value