Grace · 2021年04月13日
NO.PZ2015122802000045
问题如下：
An analyst gathers the following information for a price-weighted index comprised of securities ABC, DEF, and GHI:
The price return of the index is:
选项：
A.–4.6%.
B.–9.3%.
C.–13.9%.
解释：
B is correct.
The price return of the price-weighted index is the percentage change in price of the index: (68 –75)/75 = –9.33%.
考点：价格加权指数计算price return
这道题原解析已经很清晰了，只要注意我们这里计算的是price return，所以不需要考虑期间收益。
请问下为什么不是分别求期初以及期末时3只股票的算数平均， 然后计算价格汇报率？ 而是3个价格加总来求？
NO.PZ2015122802000045问题如下 analyst gathers the following information for a price-weighteinx compriseof securities ABF, anGHI:The prireturn of the inx is:A.–4.6%.B.–9.3%.C.–13.9%. is correct.The prireturn of the price-weighteinx is the percentage change in priof the inx: (68 –75)/75 = –9.33%.考点价格加权指数计算prireturn这道题原解析已经很清晰了，只要注意我们这里计算的是prireturn，所以不需要考虑期间收益。 计算时为什么不考虑vin？
NO.PZ2015122802000045问题如下analyst gathers the following information for a price-weighteinx compriseof securities ABF, anGHI:The prireturn of the inx is:A.–4.6%.B.–9.3%.C.–13.9%. is correct.The prireturn of the price-weighteinx is the percentage change in priof the inx: (68 –75)/75 = –9.33%.考点价格加权指数计算prireturn这道题原解析已经很清晰了，只要注意我们这里计算的是prireturn，所以不需要考虑期间收益。 单个计算再加总跟先加总再计算变动有什么区别？为什么不能单个计算变动再加总呢？
NO.PZ2015122802000045 问题如下 analyst gathers the following information for a price-weighteinx compriseof securities ABF, anGHI:The prireturn of the inx is: A.–4.6%. B.–9.3%. C.–13.9%. is correct.The prireturn of the price-weighteinx is the percentage change in priof the inx: (68 –75)/75 = –9.33%.考点价格加权指数计算prireturn这道题原解析已经很清晰了，只要注意我们这里计算的是prireturn，所以不需要考虑期间收益。 所以想问一下，如果是分别计算r1,r2,r3的话，就是equweighte的计算方法了么？谢谢老师
NO.PZ2015122802000045 为什么不能分别算r1 r2 r3取平均 不应该是a吗
