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?"
双语例句
A correlation coefficient in which one variable is many-valued and the other is dichotomous. 一个多值变数和一个双值变数的相关系数。
The approximation of the distribution is justified by looking at two correlation coefficients. 通过计算两类相关系数，证明了该近似分布函数的合理性。
