It is called variance ratio and the exact relation between variance ratio and correlation coefficient is also built.

并找到了方差比与相关系数之间的内在联系。

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Besides, the relations between variance ratio and correlation coefficient and between W-K statistics and correlation coefficient are found.

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。

youdao

Of course, learning does vary a lot between individual students, but research reliably shows that this variance is far greater within populations of boys or girls than between the two sexes.

当然，不同学生的学习能力差异很大，但研究确实表明这种差异在男孩或女孩群体中要比在两性群体中大得多。

youdao

There's no correlation between them ... and that means that the variance-- and I want to talk about equally-weighted portfolio.

它们之间没有相关性,也就是说。。。方差-,我想讲一下,权重相等的投资组合。

耶鲁公开课 - 金融市场课程节选

But, in between, if some other number, it'll be some blend of the--mean and variance of--the portfolio will be some blend of the mean and variance of the two assets.

但如果是在0和1之间的其他数值，这个投资组合的均值和方差将会是,两项资产各自的均值和方差的综合结果。

耶鲁公开课 - 金融市场课程节选

Mr Sides's findings may also reflect a phenomenon identified by Moody's Analytics: over time, states' economic performance has converged, and the variance between their growth rates now matches the lowest in 70 years.

ECONOMIST: The economy

The variance in comparative values between the two metals makes it difficult to pinpoint a magic ratio that suggests one metal is cheap or expensive relative to the other.

FORBES: Silver's Bubble And Volatility

Its called a liquidity premium and its variance over time drives both difference in volatility and average return between investment vehicles.

FORBES: How a New Housing Bubble Could Develop