# Associations to the word «Correlation»

## Wiktionary

CORRELATION, noun. A reciprocal, parallel or complementary relationship between two or more comparable objects
CORRELATION, noun. (statistics) One of the several measures of the linear statistical relationship between two random variables, indicating both the strength and direction of the relationship.
CORRELATION, noun. (algebra) An isomorphism from a projective space to the dual of a projective space, often to the dual of itself.
CORRELATION COEFFICIENT, noun. (statistics) Any of the several measures indicating the strength and direction of a linear relationship between two random variables.
CORRELATION COEFFICIENTS, noun. Plural of correlation coefficient
CORRELATION ENERGY, noun. (physics) The difference between the actual energy of a particular energy level of an atom or molecule and that calculated by the Hartree-Fock approximation
CORRELATION FUNCTION, noun. (mathematics) function giving the statistical correlation between random variables at two different points in space or time
CORRELATION FUNCTIONS, noun. Plural of correlation function

## Dictionary definition

CORRELATION, noun. A reciprocal relation between two or more things.
CORRELATION, noun. A statistic representing how closely two variables co-vary; it can vary from -1 (perfect negative correlation) through 0 (no correlation) to +1 (perfect positive correlation); "what is the correlation between those two variables?".
CORRELATION, noun. A statistical relation between two or more variables such that systematic changes in the value of one variable are accompanied by systematic changes in the other.

## Wise words

We should have a great fewer disputes in the world if words were taken for what they are, the signs of our ideas only, and not for things themselves.
John Locke