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SHAO · 2024年02月23日

老师，请问a在题目中一般有哪些表述，怎么判断题目中给出的数字就是a呢

  1. CFA II
  2. Economics Analysis

NO.PZ2023041102000038

问题如下：

Hollingsworth prefers the Solow growth accounting equation to calculate potential GDP growth rather than the more simplistic labor productivity growth accounting equation.

Exhibit 2 Long-Term Growth Projections

Based on the data in Exhibit 2, the GDP growth rate in Country A using Hollingsworth’s preferred method of calculation is closest to:

选项：

A.2.74%.

B.2.94%.

C.2.86%.

解释：

Hollingsworth’s preferred method of calculating the GDP growth rate is the Solow growth accounting equation, and the rate is calculated as follows:

ΔY/Y = ΔA/A + α(ΔK/K) + (1 – α)(ΔL/L)

where

ΔY/Y = Growth in gross domestic product, GDP

ΔA/A = Growth in total factor productivity = 1/5%

ΔK/K = Growth rate of capital = 3.2%

ΔL/L = Growth rate of labor = 0.4%

α = Output elasticity of capital = 0.3

1 – α = Output elasticity of labor = 0.7

Thus, ΔY/Y = 1.5 + (0.3 × 3.2) + (0.7 × 0.4) = 1.5 + 0.96 + 0.28 = 2.74

老师，请问a在题目中一般有哪些表述，怎么判断题目中给出的数字就是a呢

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笛子_品职助教 · 2024年02月24日

嗨，从没放弃的小努力你好：


老师，可能我描述不清楚，我想问的是埃尔法a，K的a次方那个a

同学问的是阿尔法α

我们从公式看，α是资本前的系数。

ΔY/Y = ΔA/A + α(ΔK/K) + (1 – α)(ΔL/L)


因此，如果看到资本的弹性，资本的份额这类阐述，则说的就是α

结合本题：

意思是资本对产出的弹性，这就是α的意思。


除了本题的资本对产出的弹性这个阐述，资本份额也是α的常见阐述。英文阐述如下


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努力的时光都是限量版，加油！

笛子_品职助教 · 2024年02月23日

嗨，努力学习的PZer你好：


老师，请问a在题目中一般有哪些表述，怎么判断题目中给出的数字就是a呢

Hello，亲爱的同学~

ΔA/A的描述是Growth in total factor productivity ，有时也缩写为Growth in TFP，翻译成中文是：全要素生产率增长率。

本题，同学看到： ，就可以确定，这就是ΔA/A

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就算太阳没有迎着我们而来，我们正在朝着它而去，加油！

SHAO · 2024年02月23日

老师，可能我描述不清楚，我想问的是埃尔法a，K的a次方那个a

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