NO.PZ2016010802000090
问题如下:
If the GDP deflator values for 2008 and 2010 were 190 and 212.8, respectively, which of the following best describes the annual growth rate of the overall price level?
选项:
A. 5.8%.
B. 6%.
C. 12%.
解释:
(212.8/190)^0.5 – 1 = 0.0583 or 5.8%.
考点: GDP deflator
解析:注意到本题给定的时间是从2008年到2010年,跨度为两年,题目要求的是年化的增长率,所以需要对数据进行年化开方处理,即,
(212.8/190)^0.5 – 1 = 0.0583 or 5.8%.
为什么要这么算,能详细讲一下吗