Since this is a concave function, it's not just the expected value.
由于这是一个凹函数，它不仅仅是期望值。
We have expected value, mean or average.
我们可以用期望值，或者是平均值。
The weighted mean of the random variable is the expected value.
随机变量的加权平均值是期望值。
If the expected value is 10.5 or -107.82, then 0.02 is probably fine.
如果预期值是10.5或- 107.82，则0.02是完全可以接受的。
What is the expected value of these risks?
这些风险的预期值是多少？
When formatted as a string, the number may not show the expected value.
将数字的格式设置为字符串时，可能不会显示预期值。
To be satisfied is a relative concept: It is satisfying to go beyond expected value;
满意是一个相对的概念：超出期望值即为满意；
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
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
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