Covariance stands for:
- a measure in statistics:
- for a data series / sample and the estimate of the population covariance (corrected sample covariance) see sample covariance
- for two random variables see covariance (stochastics)
- a concept of object-oriented programming, see covariance and contravariance
- a transformation behavior of mathematical or physical quantities, see covariance (physics) and tensor
In the mathematical sub-area of category theory, a functor is covariant in the usual sense .