I mean we go from 8to 5 or 6, and then they're expected to go out and collect surveys.
VOA: standard.2010.02.26
Well, let's do the smoke test number one: is the mean more or less what we expected?
好了,让我们先做1号发烟测试:,这个平均值是和我们想要的答案差不多吗?
So it's harder and... But I mean, exams themselves are not much harder than what I expected them to be.
所以这难一点……但是考试本身没有比我想象的难多少。
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
What do I mean by expected payoff?
预期收益是什么意思呢
We have expected value, mean or average.
我们可以用期望值,或者是平均值
So very similar idea, but the only thing is, I'm slightly abusing notation here by saying that my payoff depends on my strategy and a belief, but what I really mean is my expected payoff.
这和以前的概念差不多,唯一的不同,就是我这里稍微用了一些数学符号,来表述策略带来的收益与所持信念有关,这里的收益指的是预期收益
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