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?