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king · 2023年07月29日

有两个问题

  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%

1. 为什么不用指数计算增长率？ 2.Decade不是十年嘛，答案是当一年算的？

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1 个答案

笛子_品职助教 · 2023年07月30日

嗨，从没放弃的小努力你好：


1. 为什么不用指数计算增长率？ 

实际上，用指数增长来计算GDP，也没有什么理论问题。

只是实务中，GDP一直是简单计算的，大家默认成习俗了。

因此CFA这里给出的公式是：增长率 = （期末GDP - 期初GDP）/期初GDP

做题的时候只能和教材保持一致了。


2.Decade不是十年嘛，答案是当一年算的？

Decade在英语里有多个含义，既有时期的意思，也有十年的意思。

在本题的Decade是时期的意思，不是指十年。这道题的时期就是一年。




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