这里的公式看不懂 可否再解释一次？为何标准差的平方=cov(Rp, Rp)？

请问配套的讲义怎么下载或者购买

原版书上写的是representative bias，和讲义不一样。

你好老师，到底是strike还是realized volatility的变动导致的啊？

这里搞money duration neutral的意义是什么呢，我感觉不money duration neutral也可以获利啊，能否举例说明？

我对原版书课后的一道题有问题： Li’s team also examines survey data projecting the future performance of the consumer credit and telecommunications industries over the same time period for which the actual performance data was collected. They found that projections in the survey data tended to be more volatile than the actual performance data. However, Li’s team decided not to make any adjustments to the survey data because a definitive procedure could not be determined. 我认为是Status Quo Bias，但是答案是ex post risk as a biased measure of ex anti risk。 麻烦老师帮我解答一下，谢谢

为什么说spread duration与duration在数值上是相同的？

quality和value的区别在哪里？

为什么US large - cap value index had a return of 21.7% 代表的不是风格指数S而是基准B？如果风格指数S该如何表述？

老师，这道题B选项的higher forward premium for INR/USD ，这个应该怎么理解呢？