为什么PVBP分母Y的变动不是0.02%[0.01%-（-0.01%）]？ 还有分母V0没有了，是因为这里要乘上price所以抵消了对吗？

这部分概念在基础课完全没提到过，是否需要掌握呢？

右下角表格中value那行low risk那列的81%是怎么计算得出的？216*256/315=175.54并不是81%？value那行high risk那列的19%是怎么得出的？216*59/315=40 并不是19%？

老师，对于common-size分析，如果是I/S表的话，就是所有的items除以总的sales或revenue？如果是cash flow statement话，则要看情况处理，可以是相关的items除以其对应的分类total CFO / total CFI / total CFF，对吗？

这题里的P(low risk|Growth)为什么等于74%？为什么是用73除以99，而不是73除以256？

这题为什么用t分布，而不是z分布？截图2中所说的“属于小样本，所以不能用z值来代替，要去查t值表”怎么理解？

老师能不能麻烦讲一下这道题？Gardner Knight, CFA, is a product development specialist at an investment bank. Knight is responsible for creating and marketing collateralized debt obligations (CDOs) consisting of residential mortgage bonds. In the marketing brochure for his most recent CDO, Knight provided a list of the mortgage bonds from which the CDO was created. The brochure also states “an independent third party, the collateral manager, has sole authority for the selection of all mortgage bonds used as collateral in the CDO.” However, Knight met with the collateral manager and contributed to determining the bonds included in the CDO. Knight is least likely to be in violation of which of the following Standards? A. Suitability B. Disclosure of Conflicts C. Communication with Clients and Prospective Clients

请问老师，如果是retail method或者LIFO,这道题目答案应该怎么算呢

这题rank by expense ratio那一列的第4行第8行都是2，但是书P251写的却是2.5？是哪个有错？

老师好，请问为什么这里的ri不需要用dcf模型计算呀，直接用fv-pv