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

Example Sentences

Is the boxplot showing the interquartile range, or something else?

From Nature

The prices charged for equipment and services were opened to bidding and then chosen by a process called “interquartile range,” where the low and high outlier bids for each item are eliminated and all the companies agree to be paid the middle price.

From Seattle Times

The observation of 658 significantly plastic genes is well outside the interquartile range and in the lower 4% of permuted values.

From Nature

Error bars denote 2× interquartile range.

From Nature

Error bars denote 2× interquartile range.

From Nature