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ECO 2013 Lecture 16: Lecture 16

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azuremacaw708
25 Oct 2017
School
University of Florida
Department
Economics
Course
ECO 2013
Professor
David T Knight

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Document Summary

Aggregate expenditure: ae=c+i+g+(x-m, all spending on nal goods and services in the economy. Consumer spending: if your income is sh, your spending is not sh, even if income were zero, consumer spending would be positive. Autonomous spending: when there is an increase in disposable income, there will be a smaller increase in consumer spending. Marginal propensity to consume: mpc, the fraction by which consumer spending increases when disposable income goes up, for example, if disposable income goes up by and consumer spending increases by , the mpc is equal to: The consumption function: mpc= slopec/slopeyd, yd= y-t. Aggregate expenditure line: no taxes or imports, if there are taxes and/or imports. Equilibrium in the ae model: where the 45 degree line intersects ae line. Tuesday, october 17, 2017: the economy is in equilibrium when real gdp=ae. Only one point: if real gdp is less than equilibrium real gdp:

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Related Questions

Specific assignment: Mark each statement either True or False. If a statement is false, explain (very briefly) why it is false.

Keynes hypothesized that consumption is positively related to income. True

The marginal propensity to consume, MPC, is measured as changes in consumption over changes in income. True

The MPC is merely the percent of one’s income that is spent to purchase goods and services. True

The MPC is the slope of the consumption function.

If the MPC is .8, then it may be concluded that the MPS must be .2.

If a person’s income is $10,000 and that person is spending $7,500 on consumption, then it may be concluded that that person has a marginal propensity to save of .25.

The MPC and the MPS must sum to one, meaning that 1 – MPC = MPS

Given a linear (straight-line) consumption function, the MPC must be a constant.

At the point graphically at which the consumption function intersects the 45-degree reference line, the MPC must be equal to 1.

If the consumption function lies above the 45-degree reference line, then there must be negative saving in the economy.

Autonomous consumption is that level of consumption spending that is independent of the level of income.

A change in the level of income will shift the consumption function either upward or downward.

A change in the level of consumer wealth will shift the consumption function either upward or downward.

If the MPC has a positive value, then the MPS must have a negative value.

Saving is defined simply as disposable income minus consumption.

If the consumption function has a slope of 4/5, then the saving function must have a slope of .2.

Any factor that would shift the consumption function upward would shift the saving function upward also.

The average propensity to consume (APC), like the MPC, is simply the slope of the basic, Keynesian consumption function.

Given a typical shaped consumption function, as the level of income rises, the APC rises as well.

If a consumption function graphically starts at a point above the origin (i.e., has a positive vertical axis intercept), then the saving function must begin below the origin.

A dramatic rise in household inflationary expectations could be expected to shift the consumption function downward and the saving function upward.

Question 1

Which of the following describes the relationship between the change in inventories and aggregate expenditure?

A.

Aggregate expenditure equals the change in inventories minus GDP.
B.

The change in inventories equals GDP divided by aggregate expenditures.
C.

Aggregate expenditures equals GDP divided by the change in inventories.
D.

Aggregate expenditures equals GDP minus the change in inventories.
E.

The change in inventories equals GDP multiplied by aggregate expenditure.

1 points

Question 2

Suppose the marginal propensity to consume is 0.80 and taxes decrease by $10 billion. Which of the following is true?

A.

Disposable income and consumption fall by $10 billion
B.

Disposable income and consumption rise by $10 billion
C.

Disposable income rises by $10 billion and consumption rises by $8 billion
D.

Disposable income falls by $10 billion and consumption falls by $8 billion
E.

Disposable income rises by $10 billion and consumption falls by $8 billion

1 points

Question 3

If aggregate expenditure at a particular level of income is less than output,

A.

output will increase
B.

output will decrease
C.

output will remain the same
D.

output will rise slightly and then level off
E.

we cannot determine what will happen to output

1 points

Question 4

The consumption function

A.

illustrates the relationship between real disposable income and real consumption spending
B.

illustrates the relationship between the price level and real consumption spending
C.

is the relationship between productivity and real consumption spending
D.

shows how real consumption increases when real disposable income decreases
E.

illustrates the relationship between real consumption spending and employment

1 points

Question 5

The focus of the short-run macro model is on the role of

A.

spending in explaining economic fluctuations
B.

labor in explaining economic fluctuations
C.

financial markets in explaining economic fluctuations
D.

output in explaining economic fluctuations
E.

resources in explaining economic fluctuations.

1 points

Question 6

If the output level is such that the aggregate expenditure line lies below the 45-degree line, which of the following is true?

A.

Aggregate expenditure is greater than output, so inventories will increase and output will be raised.
B.

Aggregate expenditure is greater than output, so inventories will decrease and output will be increased.
C.

Aggregate expenditure is less than output, so inventories will decrease and output will be raised.
D.

Aggregate expenditure is less than output, so inventories will increase and output will be lowered.
E.

Aggregate expenditure is greater than output, so inventories will increase and output will be lowered.

1 points

Question 7

If the marginal propensity to consume is 0.7, the expenditure multiplier is

A.

7.0
B.

0.7
C.

3.0
D.

3.3
E.

not determinable without additional information.

1 points

Question 8

Aggregate expenditure is the sum of

A.

all types of spending by households and firms
B.

spending and savings by households
C.

spending by households and governments on final goods and services
D.

spending by households, government, firms, and foreigners on final goods and services
E.

all spending and saving by households, firms, and governments

1 points

Question 9

If the marginal propensity to consume is 0.5 and disposable income increases by $10,000, by how much will consumption spending increase?

A.

$10,000
B.

$500
C.

$50
D.

$5,000
E.

$9,524

1 points

Question 10

When real consumption expenditure is plotted against real disposable income the resulting relationship is

A.

very weak.
B.

virtually flat .
C.

positive and very close to linear.
D.

negative and very close to linear.

On the planet Omicron Persei 8, government spending is $1000, net taxes are $1200, and planned investment is $1400. Consumers spend according to the equation C = 100 + 0.8Yd, where Yd represents disposable income. Given this information, fill out the table below to determine which of the output levels represents a macroeconomic equilibrium, then answer the questions that follow. Output (Income) Y Net Taxes T Disposable Income Yd Consumption C Planned Investment I Government Purchases G Planned Aggregate Expenditure AE Unplanned Inventory Change 6200 1200 5000 3850 1400 1000 6250 -50 6700 1200 5500 4225 1400 1000 6625 75 7200 1200 6000 4600 1400 1000 7000 200 7700 1200 6500 4975 1400 1000 7375 325 8200 1200 7000 5350 1400 1000 7750 450

An a. Which level of output is a macroeconomic equilibrium? There is no level of equilibrium based on inventory levels.

b. Is the government budget balanced, in deficit, or surplus, and by how much? Since the government is spending less than it is collecting in taxes, we are showing a surplus.

c. Find the marginal propensity to consume, and the marginal propensity to save. d. Find the government spending multiplier. If the government wanted to increase the equilibrium level of income by $1,000, how much would it have to increase government purchases? e. Find the tax multiplier. If net taxes were lowered by $100, what effect would it have on the equilibrium level of income? Give a specific numerical answer.