interquartile range

[ in-ter-kwawr-tahyl, -til ]

noun

, Statistics.

1. the range of values of a frequency distribution between the first and third quartiles.

interquartile range

/ ˌɪntəˈkwɔːtaɪl /

noun

1. statistics the difference between the value of a variable below which lie 25 per cent of the population, and that below which lie 75 per cent: a measure of the spread of the distribution

Word History and Origins

Origin of interquartile range¹

First recorded in 1880–85; inter- + quartile