[{"word":"covariance","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A statistical measure defined as \\scriptstyle\\operatorname{Cov}(X, Y) = \\operatorname{E}((X - \\mu) (Y - \\nu)) given two real-valued random variables X and Y, with expected values \\scriptstyle E(X)\\,=\\,\\mu and \\scriptstyle E(Y)\\,=\\,\\nu.","synonyms":[],"antonyms":[]},{"definition":"The conversion of data types from wider to narrower in certain situations.","synonyms":[],"antonyms":[]}],"synonyms":[],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/covariance"]}]