correlation coefficient, coefficient of correlation, correlation - 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?" --2is a kind ofparametric statistic --2has particulars:
correlation, correlational statistics - 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 --3is a kind ofstatistics --3is a part of correlational analysis --3has particulars: