The Advantage of Using the Interquartile Range Versus the Range

Multiple Choice

The advantage of using the interquartile range versus the range as a measure of variation is

A) It is easier to compute.
B) It uses all the data when computed.
C) It always gives a closer measure of the true variation.
D) It is the more powerful measure of spread.
E) It is less affected by unusual or extreme observations in the data.