For a random variable X,the mean value of the squared deviations of its values from their expected value is called its
A)Standard Deviation
B)Mean
C)Probability
D)Variance

Question

Quizplus · Accepted Answer

The described measure is the variance, which is calculated by finding the average of the squared deviations of X from its expected value. It is a measure of how spread out the values of X are around their mean.

For a Random Variable X,the Mean Value of the Squared