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曼妙游离lyy · 2021年11月28日

这个增长率为什么不需要年化？

  1. CFA I
  2. Economics Analysis

NO.PZ2016010802000089

问题如下：

From the beginning to the ending years of a decade, the annual value of final goods and services for country X increased from €100 billion to €300 billion. Over that time period, the GDP deflator increased from 111 to 200. Over the decade, real GDP for country X increased by approximately:

选项：

A.

50%.

B.

67%.

C.

200%.

解释：

B is correct.

Real GDP in the first year was €100 billion/1.11 = €90 and in the last year it was €300 billion/2.00 = €150. Thus, (€150 – €90)/€90 = 0.67 or 67%.

考点： GDP deflator

解析：运用 GDP deflator 反解除一年前后的真实GDP数值，

一年前：€100 billion/1.11 = €90

一年后：€300 billion/2.00 = €150

在进一步求得真实GDP的增长率，(€150 – €90)/€90 = 0.67 or 67%.

或者

NOMINA2/NOMINAL1=3/1

DEFLATOR2/DFLATOR1=(NOMINAL2/NOMINAL1)×(REAL1/REAL2)

200/113=REAL1/RELA2

REAL2=REAL1×1.665

所以，INCREASE=66.5%

前面做过一题两年的就需要年化增长率
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1 个答案

笛子_品职助教 · 2021年11月28日

嗨，努力学习的PZer你好：


这个增长率为什么不需要年化？前面做过一题两年的就需要年化增长率


是否需要年化还是要看题目问的是什么。


这道题问的是，

Over the decade, real GDP for country X increased by approximately:

翻译一下，在这个时期，真实GDP增长了多少。既然问的是一个时期（decade），那就不需要年化。


如果题目明确问了每年GDP增长率，那就要年化。



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努力的时光都是限量版，加油！

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