covariances

covariances

美 　英

• 網絡斜方差矩陣；共變數分析；協方差分析

例句

In practice, the class means and covariances are not known.

在應用中，各類的均值和方差是未知的。

Secondly, the numerical characteristics such as mathematical expections, variances and covariances are obtained.

其次，研究了如此得到概率分布的數學期望、方差和協方差等數字特征。