English to English noun 1. a reciprocal relation between two or more things source: wordnet30
2. a statistic representing how closely two variables covary; 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? source: wordnet30
3. 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 source: wordnet30
4. Reciprocal relation; corresponding similarity or parallelism of relation or law; capacity of being converted into, or of giving place to, one another, under certain conditions; as, the correlation of forces, or of zymotic diseases. source: webster1913
