- The definition of a correlation is a connection or interdependence between two or more things.
When there is a connection between very cold weather and your car not starting, this is an example of a situation where there is a correlation.

## correlation

noun

- mutual relationship or connection
- the degree of relative correspondence, as between two sets of data: a
*correlation*of 75% - a correlating or being correlated

Origin of correlation

Medieval Latin*correlatio*: see com- and amp; relation

*Related Forms:*

- correlational
adjective

## correlation

noun

- A relationship or connection between two things based on co-occurrence or pattern of change:
*a correlation between drug abuse and crime.* -
*Statistics*The tendency for two values or variables to change together, in either the same or opposite way:*As cigarette smoking increases, so does the incidence of lung cancer, indicating a positive correlation.* - An act of correlating or the condition of being correlated.

Origin of correlation

Medieval Latin*correlātiō*

*, correlātiōn-*: Latin

*com-*,

*com-*+ Latin

*relātiō*,

*relation, report*(from

*relātus*, past participle of

*referre*,

*to carry back*; see

**relate**).

*Related Forms:*

**cor′re·la′tion·al**adjective

## correlation

(*plural* correlations)

- A reciprocal, parallel or complementary relationship between two or more comparable objects
- (statistics) One of the several measures of the linear statistical relationship between two random variables, indicating both the strength and direction of the relationship.

From Middle French *corrélation*

## correlation - Computer Definition

In statistics, a measure of the strength of the relationship between two variables. It is used to predict the value of one variable given the value of the other. For example, a correlation might relate distance from urban location to gasoline consumption. Expressed on a scale from -1.0 to +1.0, the strongest correlations are at both extremes and provide the best predictions. See regression analysis.

## correlation - Investment & Finance Definition

A statistical concept that shows the tendency of two or more variables to change their values at the same time, either in the same direction (positive correlation) or opposite directions (negative correlation).