Which of the following describes standard deviation?
A) It is the average of the greatest and least values in the data set.
B) It is the square root of the variance.
C) It is the difference between the first and third quartiles of a data set.
D) It is the average of the squared deviations of the observations from the mean.

Question

Quizplus · Accepted Answer

Standard deviation is a measure of how spread out a set of data is from the mean. It is calculated as the square root of the variance, which is the average of the squared deviations of the observations from the mean.

Which of the Following Describes Standard Deviation