Economics Today: The Macro View (18th Edition)
Economics Today: The Macro View (18th Edition)
18th Edition
ISBN: 9780133884876
Author: Roger LeRoy Miller
Publisher: PEARSON
Question
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Chapter 12, Problem 3P
To determine

  1. Complete the table. What is the marginal propensity to consume? What is the marginal propensity to save?
  2. Draw a graph of the consumption function. Then add the investment function to obtain C+I.
  3. Under the graph of C+I, draw another graph that shows the investment and the saving curves. Does the C+I curve cross the 45 degree reference line in the upper graph at the same level of real GDP where the investment and saving curves cross in the lower graph, at the equilibrium real GDP of $8,000?
  4. What is the average propensity to save at equilibrium real GDP?
  5. The effect on equilibrium real GDP, if the autonomous investment were to rise by $100

Concept introduction:

Marginal propensity to consume - It is the change in consumption that is caused by a change in the income. It is a numerical value representing the amount of income that is consumed.

Marginal propensity to save - It is the change in saving caused due to a change in the income. It is a numerical value representing of the amount of income that is saved.

Autonomous Investment - It is the investment that remains the same despite a change in the income.

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