The interquartile range can be defined as ______.

A) the highest score minus the lowest score in a set of data
B) the range of the middle 50% of the scores in a set of data
C) the range of all of the scores in a set of data
D) the average deviation of a score from the mean

Learning Objectives

• Comprehend and delineate essential indicators of variability: range, interquartile range, and variance.
• Identify the differences among range, interquartile range, and variance, and recognize the circumstances in which each should be applied.
• Calculate the interquartile range for a given data set.