The variance of a discrete random variable is a weighted average of the:
A)squared deviations from the mean
B)squared deviations from the median
C)square root of the deviations from the mean
D)square root of the deviations from the median
E)none of the above

Question

Quizplus · Accepted Answer

The variance of a discrete random variable is calculated as the weighted average of the squared deviations from the mean, where the weights are the probabilities of each outcome.

The Variance of a Discrete Random Variable Is a Weighted