## Definition of 'correlation'

### Noun

- a reciprocal relation between two or more things

**Synonyms:** correlativity - 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?"

**Synonyms:** correlation coefficient coefficient of correlation - 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

**Synonyms:** correlational statistics