问题如下图：
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请问 这道题与NO.PZ2015122801000011有何不同， 做法为什么不同？
NO.PZ2018062002000045问题如下ew, analyst from investment company, recently gatherethe following information for a price-weighteinx compriseof securities E，F:Whis the prireturn of this inx?A.–4.6%.B.–8.7%.C.–9.3%. is correct.The price-weighteinx's prireturn is the percentage change in the inx's price:84−9292=−8.70%\frac{84-92}{92}=-8.70\%9284−92=−8.70%.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。 分别计算出E/F的prireturn然后再除以3，这样计算可以吗？我算出来的prireturn为-3.23%，跟题目答案对不上
NO.PZ2018062002000045 问题如下 ew, analyst from investment company, recently gatherethe following information for a price-weighteinx compriseof securities E，F:Whis the prireturn of this inx? A.–4.6%. B.–8.7%. C.–9.3%. is correct.The price-weighteinx's prireturn is the percentage change in the inx's price:84−9292=−8.70%\frac{84-92}{92}=-8.70\%9284−92=−8.70%.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。 是不是只有求totprireturn的时候需要考虑v？
–8.7%. –9.3%. B is correct. The price-weighteinx's prireturn is the percentage change in the inx's price: 84−9292=−8.70%\frac{84-92}{92}=-8.70\%9284−92=−8.70%. 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。 priweigh 不是等于股价相机除以股票个数？
