方差比 [fāng chā bǐ]
网络释义专业释义
双语例句原声例句
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广义方差比是一个效率度量。
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并找到了方差比与相关系数之间的内在联系。
It is called variance ratio and the exact relation between variance ratio and correlation coefficient is also built.
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此外，找到了方差比，W - K统计量与相关系数之间的精确关系。
Besides, the relations between variance ratio and correlation coefficient and between W-K statistics and correlation coefficient are found.
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Depending on where the assets expected returns are and the assets' standard deviations, we can see that we might be able to do better than--have a lower variance than either asset.
根据资产的预期收益,以及收益的标准差，可以看到我们有更好的选择,这里的方差值比以上两种方案都要低。
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It is defined as rho= That's the correlation coefficient.
定义为,rho等于xy的协方差比xy各自的标准差的乘积,这就是相关系数
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