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So, Case and I did identical questionnaires in Los Angeles and Milwaukee and these are median price expectations.
于是科斯和我在洛杉矶和密尔沃基,做了完全相同的问卷调查,并且调查出了中间价格的期望值
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So you can tell that people have very high expectations about Baidu or about a search engine.
你会发现人们对于百度,有很高的期望值。
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Average consumers have very, very high expectations about search engines.
普通用户，对于搜索引擎有很高的期望值。
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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
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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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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
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He said that we shouldn't think that the-- the simplest story of the term structure of interest rates, which he expounded there, is that forward rates equal expected future interest rates.
他提出,我们不应该认为,他在书中写道,对于利率期限结构,最简略的概括,是远期利率等于未来利率的期望值
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Forward rates equal expected future spot rates.
即远期利率等于未来即期利率的期望值
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We have expected value, mean or average.
我们可以用期望值,或者是平均值
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That's called the expected value.
这个加权平均值就是期望值
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The basic definition-- the expected value of some random variable x--E--I guess I should have said that a random variable is a quantity that takes on value.
最基本的定义,某一个随机变量X的期望值E,我应该提到过,随机变量是一个可以取值的数
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