correlation
n 1: a reciprocal relation between two or more things [syn: {correlativity}]
2: 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}, {coefficient of
correlation}]
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 [syn: {correlational
statistics}]