不认识认识

covariance 英 [kəʊ'veərɪəns] 　美 [ko'vɛrɪəns]

设置

covariance

n. [数] 协方差；共分散　

名词复数:covariances　

A positive covariance means that the two move together.　一个正值的协方差表示两个变量同向变动

If you get a lot of negative products, that makes the covariance negative.　很多个负值的结果相加,就会使协方差是一个负值

1. A positive covariance means that the two move together.

一个正值的协方差表示两个变量同向变动
2. If you get a lot of negative products, that makes the covariance negative.

很多个负值的结果相加,就会使协方差是一个负值
3. A negative covariance means that they tend to move opposite each other.

负值的协方差就表示,二者反向变动

covariance in mathematics, "property of being covariant," 1856, from covariant (1850), from co- + variant.

词频排名 noun:22919

感谢举报