In order to measure the dispersion of a random variable,look at its
A)standard deviation.
B)mean.
C)expected value.
D)average.

Question

Quizplus · Accepted Answer

Standard deviation is a measure of how spread out the data points are from the mean, making it the best choice to measure dispersion. The mean (B) and expected value (C) both provide information about the central tendency of the data and do not consider how spread out the data points are. "Average" (D) is too vague and could refer to any of the previous choices.

In Order to Measure the Dispersion of a Random Variable,look