Macroeconomics
Macroeconomics
5th Edition
ISBN: 9781319098759
Author: Paul Krugman, Robin Wells
Publisher: Worth Publishers
Question
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Chapter 11.A, Problem 2P
To determine

Concept Introduction:

Gross Domestic Product: It is defined as the money value of all finished goods and services that are produced by the normal resident and nonresident of the country inside the boundary of a country usually for one year.

The formula to calculate change in GDP is,

    Macroeconomics, Chapter 11.A, Problem 2P , additional homework tip  1

Here,

  • Macroeconomics, Chapter 11.A, Problem 2P , additional homework tip  2is autonomous spending.
  • MPC is marginal propensity to consume.

Marginal Propensity to Consume ( MPC ): It is defined as the change which occurs in total consumption level due to change in disposable income.

The formula to calculate MPC is,

    Macroeconomics, Chapter 11.A, Problem 2P , additional homework tip  3

Here,

  • Macroeconomics, Chapter 11.A, Problem 2P , additional homework tip  4is change in disposable income.
  • Macroeconomics, Chapter 11.A, Problem 2P , additional homework tip  5is change in consumption level.
  • MPC is marginal propensity to consume.

Multiplier: It is defined as the ratio of total change in gross domestic product due to change in the autonomous spending.

The formula to calculate multiplier is,

    Macroeconomics, Chapter 11.A, Problem 2P , additional homework tip  6

Here,

  • MPC is marginal propensity to consume.

Consumption Level ( C ): It is one of the largest components of GDP .The individual consumption Depends on the disposable income.

Consumption Function: It shows how the change in disposable income of an individual changes the consumption level.

The formula to calculate consumption function is,

    Macroeconomics, Chapter 11.A, Problem 2P , additional homework tip  7

Here,

  • C is consumption level.
  • Macroeconomics, Chapter 11.A, Problem 2P , additional homework tip  8is autonomous consumption.
  • Macroeconomics, Chapter 11.A, Problem 2P , additional homework tip  9is disposable income
  • MPC is marginal propensity to consume.

Planned Aggregate Spending: It is the summation of consumption level in an economy and the planned investment.

The formula to calculate planned aggregate spending is,

    Macroeconomics, Chapter 11.A, Problem 2P , additional homework tip  10

Here,

  • C is consumption level.
  • Macroeconomics, Chapter 11.A, Problem 2P , additional homework tip  11is the planned investment spending.
  • Macroeconomics, Chapter 11.A, Problem 2P , additional homework tip  12is the planned aggregate spending.

Unplanned Investment: All those investments that businesses do not intend to take in given time. It is certain due to some external factors like fall in interest rate and increase in future profitability.

The formula to calculate unplanned investment is,

    Macroeconomics, Chapter 11.A, Problem 2P , additional homework tip  13

Here,

  • YDis disposable income.
  • Macroeconomics, Chapter 11.A, Problem 2P , additional homework tip  14is unplanned investment spending.
  • AE is the planned aggregate spending.

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