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FrankSun · 2020年04月19日

问一道题:NO.PZ2016010802000133

问题如下:

Assuming the base period for 2010 consumption is November and the initial price index is set at 100, then the inflation rate after calculating the December price index as a Laspeyres index is closest to:

选项:

A.

19.2%.

B.

36.4%.

C.

61.6%.

解释:

A is correct.

The Laspeyres index is calculated with these inputs:

November consumption bundle: 70 × 0.9 + 60 × 0.6 = 99

December consumption bundle: 70 × 1 + 60 × 0.8 = 118

December price index: (118/99) × 100 = 119.19

Inflation rate: (119.19/100) 1 = 0.1919 = 19.19%

考点:Laspeyres index

解析:本题考点较为常规,拉氏指数下,选用基期的消费篮子。

2015年的物价水平为70 × 0.9 + 60 × 0.6 = 99

2016年的物价水平为70 × 1 + 60 × 0.8 = 118

拉氏指数为(118/99) × 100 = 119.19

通货膨胀为(119.19/100) 1 = 0.1919 = 19.19%

老师,我总结了一下,是不是拉氏指数为当年除以上一年需要再减一,而Paasche指数只需要当年除以上一年而不再需要减一?

比如这道题,需要减一,为拉氏指数;经典题5.5,第24页,Paasche指数,则不需要减一。

是这样的吗?为什么?

1 个答案

丹丹_品职答疑助手 · 2020年04月19日

嗨,爱思考的PZer你好:


同学你好,本题是用的拉氏指数计算的通货膨胀率所以减1,如果是用Paasche指数计算通货膨胀率,一样要减1(因为计算通货膨胀所以减1,这和指数本身无关).只是本题要求用拉氏指数进行求解,所以用上面式子进行计算,请知悉。


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