... 残余方差;residual variance 期望方差;预期方差;expected variance 回归方差;regression variance ...
基于6个网页-相关网页
expected value & variance 期望值与方差
minimum expected posterior variance 最小期望后验方差
expected value and variance 期望值和方差
expected idle capacity variance 期望闲置能力差异
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
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。
You'd have a higher expected return with no more variance.
你的预期收益率提高了,但风险没有增加。
I'm going to drop more than the independence assumption, I'm going to assume that the assets don't have the same expected return and they don't have the same expected variance.
我还想做出一些改动,即这些资产的预期收益率,是各不相同的,方差也是不同的。
If you're comparing two portfolios with the same expected return, then you want the one with the lower variance.
比较两个有相同预期收益率的投资组合时,你会选择方差小的那一个。
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
应用推荐