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Christinack · 2018年12月02日

问一道题:NO.PZ2017100901000024 [ CFA I ]

这道题没看懂题,也没看懂选项。不知道出发点在哪里。也没看懂解释和题目的关系。

请分别解释一下,谢谢

问题如下图:

选项:

A.

B.

C.

解释:

1 个答案

答疑助手丽丽 · 2018年12月02日

这道题就是比较通胀大小的意思,按照A B C三个描述的算出各自的通胀率

一个基期,一个当期还有一个费雪指数  最后将三者比较下即可

 

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NO.PZ2017100901000024问题如下 The following presents selectecommoty prita for July–August 2015:Given the consumption basket anprices presente whitype of priinx will result in the highest calculateinflation rate over a two-month time perioA.One thuses a current consumption basketB.One thuses a constant consumption basketC.One reflecting substitutions ma consumers over time B is correct.The inflation rate calculateusing a constant consumption basket (the Laspeyres inx) is 10%, rivefollows: July 2015 consumption basket = (18 × €1) + (6 × €2) = €30 August 2015 consumption basket = (18 × €1) + (6 × €2.5) = €33 Value of the Laspeyres inx (IL) = (€33/€30) × 100 = €110 Inflation rate = (110/100) – 1 = 0.10 = 10%The inflation rate calculateusing a current consumption basket (the Paasche inx) is 8%, rivefollows: July 2015 consumption basket = (17 × €1) + (4 × €2) = €25 August 2015 consumption basket = (17 × €1) + (4 × €2.5) = €27 Value of the Paasche inx (IP) = (€27/€25) × 100 = €108 Inflation rate = (108/100) – 1 = 0.08 = 8%The inflation rate calculate\"chaining\" the monthly prices of consumption baskets they change over time (the Fisher inx) is rivefollows: Value of the Fisher inx = (Ip*IL)^0.5 Value of the Fisher Inx =(110*108)^0.5=108.99 Inflation rate = (108.99/100) – 1 = 0.0899 = 8.99%考点拉式指数法解析在拉氏指数法下,应该是用基期的消费篮子:7月物价水平(18 × € 1) + (6 × € 2) = € 30 8月物价水平(18 × € 1) + (6 × € 2.5) = € 33通胀指数Inflation rate=(33/30)-1=10%在沠许指数法下,应该是用当期的消费篮子7月的物价水平(17 × € 1) + (4 × € 2) = € 25 8月的物价水平(17 × € 1) + (4 × € 2.5) = € 27 通胀指数(27/25)-1=8%费雪指数(110*108)^0.5= € 108.99 通胀指数(108.99/100) – 1 = 0.0899 = 8.99%由此可见B正确。 什么是constant ,老师在课程哪里有讲过,还有这道题的思路是什么

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