英语词汇“covariance”的翻译、意思、用法、释义-英汉经管词典

单词	covariance
释义	covariance A measure of the degree of association between the values of two random variables. If x and y are two variables, with mean values μ_x and μ_y, where i runs from 1 to N, the covariance of x and y is defined as cov(x, y) = [∑_i (x_i - μ_x)(y_i - μ_y )]/[∑_i (x_i - μ_x )² ∑_i (y_i - μ_y )² ]^1/2. This is the sum of the products of deviations of each variable from its mean, divided by the product of their standard deviations. The highest value cov (x, y) can take is +1, where x and y are perfectly correlated; the lowest value it can take is -1, when x and y are perfectly negatively correlated. If cov (x,y) = 0, x and y are independent.
随便看	divorce of ownership and control of companies DIY DM do it yourself dollar dollar standard Domar domestic credit expansion domestic distortions domestic product domestic rates dominant firm dominant strategy domino effect dotcom company double counting double entry bookkeeping double taxation double taxation agreement Douglas Dow Jones Industrial Average down payment downside risk downstream downward-sloping demand curve

英汉经管词典收录了3426条经济管理类英汉双解词条，基本涵盖了经济学、管理学、金融学、会计学、证券期货、商务活动等领域的常用英语单词及短语词组的翻译及用法，是学习及工作的有利工具。