10 letters · 17 points in Scrabble
noun (statistics) the mean value of the product of the deviations of two variates from their respective means
originEtymology tree Proto-Indo-European *ḱe? Proto-Indo-European *ḱóm Proto-Italic *kom Proto-Italic *kom- Latin con- Latin co-der. English co- English variance English covariance From co- + variance.
Etymology from Wiktionary, CC BY-SA 3.0