The interquartile range
A) is determined by considering the extreme scores in a distribution.
B) describes the range of scores from the middle 50% of the distribution.
C) only considers the high scores in a distribution.
D) only considers the low scores in a distribution.

Question

Quizplus · Accepted Answer

The interquartile range (IQR) is a measure of variability that describes the range of scores from the middle 50% of a distribution. It is calculated by subtracting the 25th percentile (first quartile) from the 75th percentile (third quartile) and represents the spread of the middle 50% of the data. It does not consider extreme scores or only high or low scores.

The Interquartile Range