The interquartile range would be an appropriate measure of variation for________.
A) nominal level variables.
B) continuous interval-ratio level variables only.
C) ordinal level variables.
D) discrete interval-ratio level variables only.

Question

Quizplus · Accepted Answer

The interquartile range (IQR) is used to describe the spread or variation of a set of data, specifically for ordinal level variables. It is calculated by subtracting the first quartile from the third quartile. Therefore, it is appropriate for variables that have ordered categories, but not for nominal level variables. It can also be used for discrete interval-ratio level variables, but not for continuous interval-ratio level variables as it assumes that the data is divided into quartiles.

The Interquartile Range Would Be an Appropriate Measure of Variation