协方差的中文解释

统计学用语，指两个变量的相关系数与每个变量的标准差的乘积。协方差衡量两个变量向同一方向变动的程度。

Covariance的英文解释

A statistical term for the correlation of two variables multiplied by the individual standard deviation for each of the variables. Covariance measures the degree to which two variables move in the same direction.