请问百题37题 选项C为什么是不对的 用cashflow算出来的var不是应该比duration算出来的小吗 ABCD听梁老师的解释 还是有些困惑。

老师,我没有搞懂资产组合里面的A,B的权重,是不是就是7/11和4/11?但是A,B的VAR的权重,就是CCARa和CVARb的权重占比?CVARa/(CARa+CVARb)

老师你好，Ｂ选项为什么是错的？答案没看懂

老师你好，这道题从题目到答案整个不明白

老师你好，能给我讲一下policy-mix risk,active management risk,funding risk,sponsor risk这四种的区别吗？我分不清

还有这个题目,如果他的believes后面给出的仅仅只是一个置信区间,那么145页那道题目就不应该选择ACCEPT. 这几个题目长得都一样,但是答案选择不一样,烦请老师释疑. Based upon 60 monthly returns, you estimate an actively managed portfolio alpha of 1.28% and a standard error of alpha of 0.1365%. The portfolio manager wants to get due credit for producing positive alpha and believes that the probability of observing such a large alpha by chance is only 1%. Calculate the t-statistic, and state whether you would accept or reject the claim made by the portfolio manager based on the estimated t-value. A t-statistic: 9.377; Conclusion: Accept B t-statistic: 9.377; Conclusion: Reject

就是这个题目, Based on 60 monthly returns, you estimate an actively managed portfolio alpha = 1.24% and standard error of alpha = 0.1278%. The portfolio manager wants to get due credit for producing positive alpha and believes that the probability of observing such a large alpha by chance is only 1%. Calculate the t-statistic, and based on the estimated t-value would you accept (or reject) the claim made by the portfolio manager. A t = 9.70, accept

为什么B选项不对呢？

这个题目和书本上,基础班讲义,145页的题目是一样的,那个题目里面,老师讲,需要选择ACCEPT,因为问的是CLAIM,这里的解释怎么相反了呢.何去何从?

从老师的讲解来看,C答案和A答案不是一个意思吗?