Breadcrumb Home > Dictionary > Index C class interval: Meaning and Definition of Find definitions for: class' in"terval Pronunciation: [key] — Statistics. Statistics. one of a set of intervals of arbitrary width into which the range of a sample of measurement is partitioned. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. class inclusion classis 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: polymath Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language