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

Question

Quizplus · Accepted Answer

The interquartile range (IQR) is defined as the range of the middle 50% of the scores in a set of data. It is calculated by subtracting the first quartile (Q1) from the third quartile (Q3), representing the spread of the central part of the data. Options A, C, and D are incorrect definitions of the IQR.

The Interquartile Range Can Be Defined as ______