The descriptive measure of dispersion that is based on the concept of a deviation about the mean is
A)the range
B)the interquartile range
C)both the range and the interquartile range
D)the standard deviation

Question

Quizplus · Accepted Answer

The standard deviation is a measure of dispersion that takes into account how much each data point deviates from the mean of the data set. It measures the average amount of deviation from the mean and provides a more accurate measure of spread than the range or interquartile range, which only consider the extremes or middle half of the data. Therefore, the best choice is D) the standard deviation.

The Descriptive Measure of Dispersion That Is Based on the Concept