WordNet
coefficient of correlation
n. 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?" [syn: correlation coefficient, correlation]
Usage examples of "coefficient of correlation".
So far as the coefficient of correlation with cancer is concerned, it is considerably higher than the coefficient of correlation between sudden deaths and sunspots.