As a consequence, many of these products are ineffective,sub-standard, and in some cases dangerous.

VOA: standard.2010.03.09

It shows the standard deviation of the return on the portfolio as a function of the expected return on the portfolio.

它是投资组合的收益标准差,关于预期收益率的函数图像。

耶鲁公开课 - 金融市场课程节选

Milton recognizes that way of thinking as a double standard, ; and he isn't satisfied with this vulgar double standard; so he comes up with a vulgar double standard of his own.

弥尔顿认为这种思维方式有双重标准，他并不满足于低俗的双重标准;,因此他提出了一个他自己的庸俗双重标准。

耶鲁公开课 - 弥尔顿课程节选

So, the optimal thing to do if you live in a world like this n is to get n as large possible and you can reduce the standard deviation of the portfolio very much and there's no cost in terms of expected return.

如果现实中也这样简单的话,那么你就尽量增大,这样就能让投资组合的标准差,就会大大降低,从预期收益率的角度来看,这样做的成本是零。

耶鲁公开课 - 金融市场课程节选

include stdio h The next line of code says include standard io.h which just as a little sanity check contains among other things, printf.

接着的一行代码写着,这个库文件包含一些我们常用的函数,譬如，printf函数。

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