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I'm going to generalize from our simple story even more by saying that, let's not assume that we have equally-weighted.
我要将我们刚才的简单特例,变得更普遍适用一些，现在我们假设这两项资产的权重并不相等。
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another one of your exams will just count for more."
我们会相应提高你之前某次考试所占的权重。”
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There's no correlation between them ... and that means that the variance-- and I want to talk about equally-weighted portfolio.
它们之间没有相关性,也就是说。。。方差-,我想讲一下,权重相等的投资组合。
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they will weight your exams differently.
因为教授们会重新安排你各次考试的权重。
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The 20% given to the homework is not a real measure of how important it is.
作业的权重虽然只有20%,但这个数字是无法真正衡量其重要性的
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I encourage you to spend more time than the weighting would suggest.
我建议大家花费,比分数权重更多的时间完成作业
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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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In terms of diversification, there are half a dozen asset classes with weights that range between 4% and 28%.
投资多元化方面,投资于六中不同的资产类别,权重从4%至28%不等
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It weights big deviations a lot because the square of a big number is really big.
使偏离的权重更大,一个数的平方是一个更大的数
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The equally-weighted case that I gave a minute ago was one where the two assets had--were at the same-- had the same expected return and the same variance; but this is quite a bit more general.
我刚刚举的相同权重的例子,表示两种资产-,有相同的预期收益和相同的方差;,但这种情况更加普遍一些。
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We started out with just a simple idea: that you don't want to put all your eggs in one basket and if you had a lot of independent stocks you would want to just weight them equally.
我们从一个简单的想法开始：,你不想把所有的鸡蛋放入一个篮子里,如果你有许多互相独立的股票,你给它们相同的权重。
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If I came to the office next week and decided domestic stocks were too high -I want to move that target down to 8% -in the way that I've described market timing, that would be a market timing move and we're very careful not to do that.
如果下周我上班时,认为国内股票价格偏高,我会把权重调低到8%,用我描述过的方式,这就是个市场时机选择的操作,我们一般很谨慎,并不会轻易那么做
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I've made a very special case that this is the case of an equally-weighted portfolio.
在这里我假设了一个特例,即一个各项资产权重相等的投资组合。
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.. I started out with the equally-weighted-- I was talking about stocks-- about n stocks that all have the same variance and are all independent of each other.
开始的时候我讲了等权重的-,我开始时讲了股票-,几支拥有相同方差的股票,彼此间相互独立。
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