(category theory) (Of a functor) which preserves composition. / (object-oriented programming) Using or relating to covariance.

(algebra) A bihomogeneous polynomial in x, y, ... and the coefficients of some homogeneous form in x, y, ... that is invariant under some group of linear transformations.

plural of covariant

plural of covariance

(statistics) A statistical measure defined as scriptstyle operatorname Cov(X,Y)= operatorname E((X-𝜇)(Y-𝜈)) given two real-valued random variables X and Y, with expected values scriptstyle E(X),=,𝜇 and scriptstyle E(Y),=,𝜈.

(statistics) A variable that is possibly predictive of the outcome under study.

covariance

plural of covariate

(statistics) To vary together with another variable, particularly in a way that may be predictive

simple past tense and past participle of covary