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勇往直前 · 2022年01月19日

基准年份和Real GDP

  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%

请问老师：如果两个Deflator 111 和 200 都是 Nominal GDP比Real GDP，而 Real GDP 是基准年份，那么Real GDP应该是相等的啊？

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勇往直前 · 2022年01月19日

实际上Real GDP的增长只是Q产量的增长率

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笛子_品职助教 · 2022年01月20日

嗨，从没放弃的小努力你好：


如果两个Deflator 111 和 200 都是 Nominal GDP比Real GDP，而 Real GDP 是基准年份，那么Real GDP应该是相等的啊？


Real GDP在不同时间点，是不一样的。


一年前，real GDP：€100 billion/1.11 = €90

一年后：real GDP：€300 billion/2.00 = €150


实际上Real GDP的增长只是Q产量的增长率

是的，所以增长率是€150 – €90)/€90 = 0.67 or 67%.

意味着这段时间，产量Q增长了67%

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努力的时光都是限量版，加油！

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