亚洲AV成人精品一区二区三区四区|快播日韩美嘛豆一区|国产欧美激情a级免费|一级黄片AAA色一品|久久国产成人精品Av|谁有AV免费观看|成人高清国产视频|日韩区欧美区久久综合一区|在线观看黄色网页|亚洲欧美国产11

單詞乎

covariance

音標[k?u'v??ri?ns]
covariance是什么意思、covariance怎么讀

covariance漢語翻譯

n. 協(xié)方差
【化】 協(xié)方差

covariance英語解釋

名詞 covariance:

  1. (statistics) the mean value of the product of the deviations of two variates from their respective means

covariance詳細解釋

co.var.i.ance

n.（名詞）
A statistical measure of the variance of two random variables that are observed or measured in the same mean time period. This measure is equal to the product of the deviations of corresponding values of the two variables for their respective means.
協(xié)方差：在觀察或測量同一平均時間的兩個任意變量的變化的一個統(tǒng)計值。這個值等于這兩變量的各自平均值偏離其相應(yīng)值的乘積

0
糾錯