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interquartile range

[in-ter-kwawr-tahyl, -til] /ˌɪn tərˈkwɔr taɪl, -tɪl/
noun, Statistics.
the range of values of a frequency distribution between the first and third quartiles.
Origin of interquartile range
First recorded in 1880-85; inter- + quartile Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for interquartile range

interquartile range

(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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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