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Definition 2024

covariance

covariance

English

Noun

covariance ‎(plural covariances)

(statistics) 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 $\scriptstyle E(Y)\,=\,\nu$ .
(object-oriented programming) The conversion of data types from wider to narrower in certain situations.

See also

contravariance

Derived terms

covariance matrix

Translations

statistical measure

Basque: kobariantza
Catalan: covariància f
Czech: kovariance f
Dutch: covariantie (nl) f
Esperanto: kunvarianco
French: covariance (fr) f
Italian: covarianza (it) f

Polish: kowariancja (pl) f
Portuguese: covariância f
Russian: ковариа́ция (ru) f ‎(kovariácija)
Spanish: covariación f
Sundanese: kovarian
Tagalog: kaalig
Turkish: kovaryans

object-oriented programming

French: covariance (fr) f

French

Noun

covariance f ‎(plural covariances)

(statistics) covariance
(object-oriented programming) covariance