ECON102 Lecture Notes - Lecture 7: Autonomous Consumption, Consumption Function, Aggregate Demand

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copperdog730

24 Feb 2018

School

University of Alberta

Department

Economics

Course

ECON102

Professor

Mesbah Sharaf

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Continuing chapter 8: consumption expenditure (c): (cid:1829)=(cid:1853)+(cid:1854)(cid:1877) Acronyms: c= consumption expenditure, a= autonomous consumption. (this is the consumption that does not depend on income. Example: if you are not working, you still have to pay for food, therefore you"re still (cid:272)o(cid:374)su(cid:373)i(cid:374)g even if your income is 0. : b= marginal propensity to consume (mpc). (the desire to consume) (the slope of. [how much consumption changes when (cid:1877) changes by 1$] Apc: average propensity to consume the consumption function) (cid:1839)(cid:1845)= (cid:1839)(cid:1829)= . Mpc + mps = 1 (cid:1877)=(cid:1877) (cid:1846) (cid:1877)=(cid:1845)+(cid:1829) (cid:1839)(cid:1829)+(cid:1839)(cid:1845)=(cid:883) (cid:1827)(cid:1829)+(cid:1827)(cid:1845)=(cid:883) You have 100$ to consume and out of that 100$, you decide to use 80$ which is 80% of the 100$. Meaning, you took out the 100$ from your savings to begin with which is dissaving. [dissaving is taking out of savings or borrowing money] I(cid:374) your sa(cid:448)i(cid:374)gs, you"re dissa(cid:448)i(cid:374)g the (cid:1005)(cid:1004)(cid:1004)$, a(cid:374)d putti(cid:374)g (cid:271)a(cid:272)k the other. Any change in (cid:1877) by a certain amount of consumption will change by.

Related Questions

In the country of Utopia, the structure of the economy is described as the following:

Y = C + I + G + (X â M)

C = C0 + (mpc)(DI)

I = I0 + (mpi)(Y)

M = M0 + (mpm)(DI)

DI = Y â T

T = (t)(Y)

Where Y is the level of real GDP in the economy, DI denotes the disposable income in the economy, C represents the level of consumption in the economy, C0 is the autonomous consumption level, mpc denotes the marginal propensity to consume, I is the level of investment in the economy, I0 characterizes the autonomous investment, mpi is the marginal propensity to invest, G characterizes the level of government expenditure, X is the level of export from the country, M represents the amount of import in the country, M0 is the level of autonomous import, mpm denotes the marginal propensity to import, T is the amount of tax imposed in the country, and t represents the average tax rate in the economy.

After extensive research, the economists in Utopia believe that the following values (all the dollar values are in number of millions) can be assigned to the structure of the economy, C0 = $500; mpc = 0.8; I0 = $200; mpi = 0.2; G = $400; X = $300; M0 = $100; mpm = 0.1; and t = 0.25. The Utopian economists further believe that the level of potential GDP in the country is $4,000.

Questions:

1. What is the demand side equilibrium level of real GDP in the country? Please show your calculations.

2. Is the overall Utopian economy in equilibrium? Elaborate your answer.

3. If the economy is not in equilibrium, what will happen eventually? Explain your answer.

4. What is the value of the overall multiplier? Please show your calculations and explain the value.

The country of Utopia is probably experiencing a recessionary pressure in its economy now. The economists are suspecting that, since the latest estimates of mpc, mpi, and mpm indicate that their estimated values have gone down to 0.65, 0.15, and 0.05 respectively.

5. What is the demand side equilibrium level of real GDP in the country now? Please show your calculations.

6. Is the overall Utopian economy now in equilibrium? Elaborate your answer.

7. If the economy is not in equilibrium now, what will happen eventually? Explain your answer.

8. What is the adjusted value of the overall multiplier? Please show your calculations and explain the value.

1. The multiplier helps explain

A. why a decrease in taxes causes real Gross Domestic Product (GDP) to fall by more than the amount of the decrease in taxes.

B. why a fall in investment cause real Gross Domestic Product (GDP) to rise by more than the amount of the decrease in investment.

C. why a rise in government expenditures causes real Gross Domestic Product (GDP) to rise by more than the amount of the increase in government spending.

D. why an increase in disposable income causes real Gross Domestic Product (GDP) to rise by less than the amount of the increase in disposable income.

2. If the marginal propensity to save (MPS) increases, the multiplier

A. decreases.

B. can either increase or decrease, depending on what happens to the marginal propensity to consume (MPC).

C. stays the same.

D. increases.

QUESTION 60

The investment function will shift when there is a change in

		A. the opportunity cost of retained earnings.
		B. firms' profit expectations.
		C. the cost of borrowing.
		D. the interest rate.

1.43 points

QUESTION 61

In the Keynesian model, whenever planned saving exceeds planned investment,

		A. there will be unplanned inventory accumulation.
		B. real GDP will not be influenced.
		C. the interest rate will remain unchanged.
		D. there will be unplanned inventory depletion.

1.43 points

QUESTION 62

In the Keynesian model, whenever planned saving is less than planned investment,

		A. there will be unplanned inventory depletion.
		B. the interest rate will remain unchanged.
		C. there will be unplanned inventory accumulation.
		D. real GDP will not be influenced.

1.43 points

QUESTION 63

Government purchases

		A. are determined by the political process.
		B. are determined by the public.
		C. are influenced by interest rates.
		D. are determined by suppliers.

1.43 points

QUESTION 64

If, at some level of output, total planned real expenditures are less than real Gross Domestic Product (GDP),

		A. real GDP will either fall or remain unchanged, depending on the MPC.
		B. real GDP will rise.
		C. real GDP remains unchanged.
		D. unplanned inventories will increase and real GDP will fall.

1.43 points

QUESTION 65

When the economy is operating at the equilibrium level of GDP, we know that

		A. total planned real expenditures equal real GDP.
		B. real net exports equal inventory changes.
		C. planned real investment spending equals real net exports of zero.
		D. total planned real consumption expenditures equal real GDP.

1.43 points

QUESTION 66

One divided by the marginal propensity to save (MPS) is the formula for

		A. the inverse of the multiplier.
		B. the multiplier.
		C. one minus the multiplier.
		D. autonomous consumption.

QUESTION 67

Thinking like an economist would, which is true of investment?

		A. Investment represents spending on capital goods.
		B. Investment is a stock concept.
		C. Investment is putting money into stocks and bonds.
		D. It is the portion of disposable income that is not used for consumption or saving.

QUESTION 68

Other things being equal, if input prices rise in a country, then there would be

		A. cost-push inflation.
		B. demand-pull inflation.
		C. cost-pull deflation.
		D. more production and a lower price level.

QUESTION 69

In the short run, if the price level rises, then the overall economy can temporarily produce beyond its nominal capacity. One reason for this is that

		A. existing capital equipment can be used more intensively.
		B. wage rates rise almost simultaneously with the price level.
		C. the unemployment rate usually rises dramatically along with the price level.
		D. workers can be switched from counted to uncounted production.

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1.Ceteris paribus, if the U.S. federal government reduces its budget deficit which of the following will be observed?

Answer

	a.	The aggregate demand curve will shift to the right.
	b.	The economy will always approach potential GDP.
	c.	The marginal propensity to consume will increase.
	d.	The average price level will increase.
	e.	The aggregate demand curve will shift to the left.

2. If the government wants to close a GDP gap, it can:

Answer

	a.	lower government spending on social security.
	b.	adopt contractionary fiscal policies to control inflation.
	c.	increase its budget deficit.
	d.	repay its borrowings.
	e.	raise both direct and indirect tax rates.

3. Suppose the short-run equilibrium level of income exceeds the full employment level of income and there is high inflation. Hence, the government decides to implement a fiscal policy that will act to reduce national output and price level. This can be accomplished by:

Answer

	a.	lowering average tax rates such that aggregate supply is increased.
	b.	increasing government spending such that aggregate expenditures are increased.
	c.	increasing transfer payments such that aggregate expenditures decline.
	d.	raising taxes and government spending by the same amount such that aggregate supply is decreased and aggregate demand is increased.
	e.	decreasing government spending such that aggregate demand is reduced.

4. A drop in investment spending caused by increased government budget deficits is referred to as:

Answer

	a.	the multiplier effect.
	b.	crowding out.
	c.	an expansionary gap.
	d.	the paradox of thrift.
	e.	the Ricardian equivalence.

5. Discretionary fiscal policy is best defined as:

Answer

	a.	the deliberate manipulation of the money supply to expand the economy.
	b.	the deliberate change in tax laws and government spending to change equilibrium income.
	c.	the policy action taken by the Congress to reduce the federal budget deficit.
	d.	the arbitrary fluctuation in tax laws and budget requirements.
	e.	the automatic change in certain fiscal instruments when real GDP changes.

6. Which of the following can be considered as an automatic stabilizer in the economy?

Answer

	a.	Money supply
	b.	Disposable income
	c.	Real exchange rate
	d.	Real interest rate
	e.	Unemployment insurance

7. Which of the following is true about automatic stabilizers?

Answer

	a.	When income rises, automatic stabilizers increase/boost spending.
	b.	Automatic stabilizers are a part of discretionary fiscal policy.
	c.	An automatic stabilizer is any program that responds to fluctuations in the business cycle in a way that moderates the effects of those fluctuations.
	d.	Any kind of trade policy adopted by the government will be considered as an automatic stabilizer.
	e.	The interest rate is an example of an automatic stabilizer.

8. Increased budget deficits

Answer

	a.	can cause interest rates to increase and hence decrease net exports
	b.	have no effect on net exports
	c.	can cause interest rates to decrease and hence increase net exports
	d.	never impose additional interest costs on the government

9. The Ricadian Equivalence implies that when financing additional government expenditures

Answer

	a.	there is no difference between increasing current taxes or borrowing now and increasing taxes in the future because consumption will decrease either way.
	b.	there is no difference between increasing current taxes or borrowing now and increasing taxes in the future because consumption will increase either way.
	c.	increasing borrowing is the best option
	d.	increasing current taxes is the best option

10. Assuming no effects on aggregate supply, if the government increases government spending and decreases taxes in an attempt to prevent a possible recession, aggregate demand will shift to the ____, the price level will either remain constant or ____, and the level of real GDP will ____.

Answer

	a.	right; decrease; increase
	b.	right; decrease; decrease
	c.	left; decrease; decrease
	d.	left; increase; increase
	e.	right; increase; increase

11. For a hypothetical economy, the MPS is 0.08 and the MPI is 0.17. If government spending increases by $35 and taxes increase by $35, what will be the net effect on equilibrium income?

Answer

	a.	A decrease of $35
	b.	An increase of $105
	c.	An increase of $35
	d.	A decrease of $105
	e.	A decrease of $15

12.12. The term fiscal policy refers to

Answer

	a.	the adjustment of the GDP for inflation.
	b.	the purchase and sale of U.S. government securities to regulate the money supply.
	c.	the use of government spending and taxation to influence the level of economic growth and inflation.
	d.	the use of fines to penalize unfair business practices.
	e.	a policy action by Congress to overrule unpopular budget cuts by the president.

13. If aggregate demand intersects aggregate supply in the vertical range of the aggregate supply curve, then, other things equal, an increase in government spending will

Answer

	a.	raise the price level and leave real GDP unchanged.
	b.	raise real GDP by the amount indicated by the government spending multiplier and leave the price level unchanged.
	c.	raise both real GDP and the price level by a multiple of the initial spending increase.
	d.	have no effect on real GDP or on the price level, because all private investment will be crowded out.
	e.	lower real GDP by an amount equal to the spending increase and reduce inflation.

14. Which of the following is not a means to finance government spending?

Answer

	a.	Government subsidies
	b.	Government debt
	c.	Capital gains taxes
	d.	Personal income taxes
	e.	Money creation

15. An automatic stabilizer is

Answer

	a.	a change in government spending aimed at achieving a policy goal.
	b.	an element of fiscal policy that automatically changes in value as real GDP changes.
	c.	an element of monetary policy that automatically changes in value as real GDP changes.
	d.	a decrease in tax rates as the economy moves into a recession.
	e.	a deliberate change in taxation aimed at increasing real GDP.

16. Budget deficits tend to grow during recessions because

Answer

	a.	real GDP growth is zero, which causes neither tax receipts nor government expenditures to grow.
	b.	real GDP growth is positive, which reduces both tax receipts and transfer payments.
	c.	real GDP growth is negative, which reduces transfer payments in relation to tax receipts.
	d.	real GDP growth is negative, which reduces tax receipts in relation to government expenditures.
	e.	real GDP growth is positive, which increases tax receipts in relation to government expenditures.

ECON102 Lecture Notes - Lecture 7: Autonomous Consumption, Consumption Function, Aggregate Demand

ECON102 Full Course Notes

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