The interquartile range is
A) the 50th percentile.
B) another name for the standard deviation.
C) the difference between the largest and smallest values.
D) the difference between the third quartile and the first quartile.

Question

Quizplus · Accepted Answer

The interquartile range (IQR) identifies the spread of the middle 50% of a dataset. It is the difference between the third quartile (the value at 75% of the ordered data) and the first quartile (the value at 25% of the ordered data), and it provides a measure of variability that is less sensitive to extreme values than the range or standard deviation.

The Interquartile Range Is