Macroeconomics: Principles for a Changing World
Macroeconomics: Principles for a Changing World
4th Edition
ISBN: 9781464186929
Author: Eric Chiang
Publisher: Worth Publishers
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Chapter 5, Problem 1QP
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Explain the stages of business cycles in the economy.

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The business cycle refers to the periods of progress and decline in an economy. There are mainly four stages in the business cycle. They are listed below:

  • Recession: In the recession stage of the business cycle, the economy starts to slow down.
  • Trough: Trough is another stage of the business cycle where the economy hits the bottom, usually in a recession.
  • Expansion: At the stage of expansion, the economy starts growing gain.
  • Peak: At the economic stage of peak, the economy is at the top of the cycle. This means a state of ‘irrational exuberance’.
Economics Concept Introduction

Business cycle: The term business cycle refers to the repeated ups and downs in the level of economic activity that extend for several years.

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CEO Salary and Firm SalesWe can estimate a constant elasticity model relating CEO salary to firm sales. The data set is the same one used in Example 2.3, except we now relate salary to sales. Let sales be annual firm sales, measured in millions of dollars. A constant elasticity model is[2.45]ßßlog (salary) = ß0 + ß0log (sales) + u,where ß1 is the elasticity of salary with respect to sales. This model falls under the simple regression model by defining the dependent variable to be y = log(salary) and the independent variable to be x = log1sales2. Estimating this equation by OLS gives[2.46]log (salary)^=4.822 + 0.257 (sales)             n = 209, R2 = 0.211.The coefficient of log(sales) is the estimated elasticity of salary with respect to sales. It implies that a 1% increase in firm sales increases CEO salary by about 0.257%—the usual interpretation of an elasticity.
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