Breadcrumb Home > Dictionary > Index I interquartile range: Meaning and Definition of Find definitions for: in•ter•quar'tile range" Pronunciation: (in"tur-kwôr'tīl, -til), [key] — Statistics. Statistics. the range of values of a frequency distribution between the first and third quartiles. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. interpupillary interracial TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: inimical Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language