covariance

EnglishEdit

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NounEdit

covariance ‎(plural covariances)

  1. (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.
  2. (computing, programming) The conversion of data types from wider to narrower in certain situations.

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FrenchEdit

NounEdit

covariance f ‎(plural covariances)

  1. covariance

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