Even if the expected value is the same, they'd move around a lot.

即使股票的价格是一样的，但是它们的价格经历很多改变。

麻省理工公开课 - 计算机科学及编程导论课程节选

Another important concept in probability theory that we will use a lot is expected value, the mean, or average-- those are all roughly interchangeable concepts.

概率论中另外一个常用的重要的概念是,期望值或者也叫均值,这两个概念可以互换

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

We have expected value, mean or average.

我们可以用期望值,或者是平均值

耶鲁公开课 - 金融市场课程节选

That's called the expected value.

这个加权平均值就是期望值

耶鲁公开课 - 金融市场课程节选