Covariance (disambiguation)
 Covariance (disambiguation)

Covariance may refer to:
 Covariance, a measure of how much two variables change together
 Covariance matrix, a matrix of covariances between a number of variables
 Crosscovariance, the covariance between two vectors of variables
 Autocovariance, the covariance of a signal with a timeshifted version of itself
 Covariance function, a function giving the covariance of a random field with itself at two locations
 Covariant transformation, a rule that describes how certain physical entities change under a change of coordinate system
 Covariance and contravariance of vectors, properties of how vector coordinates change under a change of basis
 Covariance and contravariance of functors, properties of functors
 Covariance and contravariance (computer science), a system of class relations in computer science
 General covariance, the invariance of the form of physical laws under arbitrary differential coordinate transformations
 Lorentz covariance, a property of spacetime that follows from the special theory of relativity
 Poincaré covariance, related to Lorentz covariance
 Eddy covariance, an atmospheric flux measurement technique
See also
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