The interquartile range would be an appropriate measure of dispersion for
A)nominal level variables.
B)interval-ratio level variables only.
C)ordinal level variables.
D)variables with negative skews.

Question

Quizplus · Accepted Answer

The interquartile range is a measure of dispersion that is calculated from the median of the data, and therefore it is appropriate for ordinal level variables. Nominal level variables and variables with negative skews cannot be ordered, so the interquartile range is not suitable for these types of variables. Interval-ratio level variables may require more precise measures of dispersion, such as standard deviation, since they have a continuous measurement scale.

The Interquartile Range Would Be an Appropriate Measure of Dispersion