/ Dictionary / Index C correlation coefficient: Meaning and Definition of Find definitions for: correla'tion coeffi"cient Pronunciation: [key] — Statistics. Statistics. one of a number of measures of correlation, usually assuming values from +1 to −1. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. correlation correlation ratio Related Content Daily Word Quiz: wizened Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language