The variance of a random variable measures how far from the expected value its values typically are.

随机变量的方差衡量随机变量值与期望值偏离的程度。

youdao

Expected value is good and variance is bad because that's risk; that's uncertainty.

期望值越高越好,方差就相反,因为方差代表着风险,也就是不确定性

youdao

We want a high expected value of returns, but we don't like variance.

我们希望收益的期望值较高,并且稳定

youdao

Expected value is good and variance is bad because that's risk; that's uncertainty.

期望值越高越好,方差就相反,因为方差代表着风险,也就是不确定性

耶鲁公开课 - 金融市场课程节选

We want a high expected value of returns, but we don't like variance.

我们希望收益的期望值较高,并且稳定

耶鲁公开课 - 金融市场课程节选

Valuation becomes a matter of ratios of highly formalized GAAP earnings in relation to fluctuating prices adjusted by highly abstract notions of variance and value at risk.

FORBES: What Gold Sees, and Ben Bernanke Does Not

"The future of France in the family of great nations depends on our capacity for initiative - a value totally at variance with an enarque culture based on zero risk and suspicious of any idea of competition or power-sharing, " they said.

BBC: Call to close elite French college