Breadcrumb Home > Dictionary > Index C critical ratio: Meaning and Definition of Find definitions for: crit'ical ra'tio Pronunciation: [key] — Statistics. Statistics. a ratio associated with the probability of a sample, usually the ratio of the deviation from the mean to the standard deviation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. critical pressure critical region TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: parallax Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language