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From then on,if you accept the analysis and the assumptions or the estimates that underlie it, then we pretty much know how to construct portfolios.
如果你们理解了整个分析过程,假设前提以及各项资产的有关估算,就能知道该怎样建立一个投资组合
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Underlying this analysis, we have estimates of the expected returns on assets, notably, the expected returns on stocks and bonds.
凭借这个分析，我们可以估算出资产预期投资收益，特别是股票和债券的预期收益。
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If our estimates are off then the hypothesis makes no sense, so maybe there's no relationship between dietary fat and breast cancer.
如果评估是无关联的,那这个假说也就没有意义,那么在膳食脂肪和乳腺癌之间,也许没有任何关系
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If you accept my estimates and you accept the capital asset pricing model, that would have to be true.
如果你同意我的估算,而且认同资本资本资产定价模型，那这种投资组合就会带来最大收益。
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The underlying estimates may not accord with your belief or your intuitive sense of common sense.
各项资产有关估算结果可能与你的预想,或直觉不相符合
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Again, I don't want to make too much of my estimates because different people would estimate these things in different ways, but that's the theory.
再说一次，我不想太过强调我的估算,因为不同的人,会用不同的方法估算这些数据，但这只是个理论。
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Those same estimates say that if you could turn that around, that if the world could eat the recommended level of fruits and vegetables, that you'd reduce the prevalence of heart disease by 31%.
反过来说就是,如果大家都能食用适量的水果和蔬菜,那心脏病的普遍性将降低31%
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All right now, now what I'd like you to do is just sort of do a guestimate in your mind of the percentage errors you might have made overall in these estimates, and I'll come back and ask you in a minute.
好了,现在,现在我希望你们,在脑海中估算下你们预测的百分误差,你们可以就总值做一个估算,我会在一分钟后问你们
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He estimates, for his purposes, and he shows you calculations of the efficient portfolio frontier.
他用自己的角度估算了参数,他还给出了计算有效边界的方法。
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The way you would go about it, if you're a portfolio manager, is you have to come up with estimates of the inputs to these formulas-- that means the expected returns, the standard deviations, and the covariances.
你所要做的，如果你是一个资产经理，你要做的事情就是,对公式里面的一些参数进行估计-,那些参数包括预期收益，标准差，和协方差。
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I don't find that my analysis is profound in the final answer, I just took some estimates using my data and, again, we could-- if someone wanted to argue with us they could argue with my estimates of the expected returns of the standard deviations and the covariances, but not with this theory.
我在计算过程中并没有做太深入的分析，我只是用我的数据做了一下大概的估计,我再说一次，我们可以-,如果有人想就这个问题与我们争辩,他们可以争论我对期望收益的估计,或是争论标准差和协方差的估计值，但并不会针对理论本身。
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What this is, is you take a group of studies on an issue, you pool them all together, and then you weight studies differently depending on factors like how large they were, how good their methods were, and then you come out with overall estimates about the impact of something, in this case the Mediterranean Diet, on health outcomes.
所谓荟萃分析就是将某一问题的一组研究,汇总起来,并根据某些因素,赋予这些研究不同的权重,如基于研究的大小,研究方法的好坏等,然后得出关于某事物的影响的总体评估,在地中海式饮食中就是指健康结果
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Or, especially when talking about estimates of the variance, we sometimes say S2 or we say standard deviation2.
又或者,在讨论方差估计的时候,我们常用S2,称为标准差的平方
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