Breadcrumb Home > Dictionary > Index L least squares: Meaning and Definition of Find definitions for: least' squares' Pronunciation: [key] — Statistics. Statistics. a method of estimating values from a set of observations by minimizing the sum of the squares of the differences between the observations and the values to be found. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. least significant digit least upper bound TrendingHere are the facts and trivia that people are buzzing about. The Book of 1 Corinthians: Summary Current Events This Week: June 2023 Languages Spoken in Each Country of the World Aesop's Fables: Aesop's Fables Milestones in Environmental Protection The 12 Labors of Hercules (In Order) ✖ Related Content Daily Word Quiz: spelunk Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language