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succi_z · 2023年02月23日

为什么不能直接用最后一列的数据来进行判断呢?

NO.PZ2018091706000021

问题如下:

Economic data of a country is showed below

According to the economic data which of the three counties has the highest growth rate of potential GDP:

选项:

A.

Country X.

B.

Country Y.

C.

Country Z.

解释:

A is correct.

考点Cobb-Douglas production function 的变形公式

解析growth rate of potential GDP= growth rate of labor force + growth rate in labor productivity

X=2.1+2.6=4.7

Y=1.5+1.8=3.3

Z=0.6+1=1.6

Growth rate in potential GDP=long-term growth rate of labor force+long-term growth rate in labor productivity,即Y变动率=y变动率+L变动率。那么,Y即potential GDP,难道不是等于output?

若不是,那么最后一列的ouput应该用什么来进行表示,或者在公式中如何体现?直接是actual GDP或者GDP?

1 个答案

笛子_品职助教 · 2023年02月24日

嗨,努力学习的PZer你好:


Growth rate in potential GDP=long-term growth rate of labor force+long-term growth rate in labor productivity,即Y变动率=y变动率+L变动率。那么,Y即potential GDP,难道不是等于output?

Hello,亲爱的同学!

potential GDP是不等于output的。


若不是,那么最后一列的ouput应该用什么来进行表示,或者在公式中如何体现?直接是actual GDP或者GDP?

最后一列是指actual GDP。公式(支出法)为,actual GDP = C + I + G+ X-M

而这道题要求我们计算潜在GDP,公式为:growth rate of potential GDP= growth rate of labor force + growth rate in labor productivity


所以actual GDP在这里是没用的条件。


在解题时有个默认的设定,直接写GDP或者output,一般默认为actual GDP。如果是potential GDP,是一定要加上potential 这个词的。

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努力的时光都是限量版,加油!

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