01:220:103 Chapter Notes - Chapter 15: Potential Output, Arthur Melvin Okun, Inventory Investment

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4 Dec 2018

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A household"s consumption and labor supply decisions are interdependent. Apc (average propensity to consume) = c/di (consumption expenditures divided by disposable income) Compared to mpc (=change in c over change in y) If mpc is less than the apc, the apc is falling. If mpc is greater than the apc, the apc is rising. If it"s the same, the apc remains constant. C = 300 + 0. 5y - apc. Life-cycle theory of consumption - a theory of household consumption: households make lifetime consumption decisions based on their expectations of lifetime income. Consumption decisions based on current income and income expectations. The path of consumption over a lifetime is likely to be more stable than the path of income. Young households borrow in anticipation of higher income. Negative wealth: the value of assets is less than the debts owed. A household in its prime pays off debts and saves up for later years. Positive wealth: assets greater than debts owed.

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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 oneâs 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 personâs 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 â 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.

The following table is a consumption schedule. Assume taxes and transfer payments are zero and that all saving is personal saving.

(GDP = DI)	C	S	APC	APS
$1,500	$1,540	$_____	1.027	–0.027
$1,600	$1,620	_____	1.013	–0.013
$1,700	$1,700	_____	_____	_____
$1,800	$1,780	_____	0.989	0.011
$1,900	$1,860	_____	0.979	0.021
$2,000	$1,940	_____	_____	_____
$2,100	$2,020	_____	0.962	0.038
$2,200	$2,100	_____	_____	_____

Compute saving at each of the eight levels of disposable income and the missing average propensities to consume and to save.

1. The break-even level of disposable income is $________.

2. As disposable income rises, the marginal propensity to consume remains constant. Between each two GDPs the MPC can be found by dividing $________ by $________, and is equal to _______.

3. The marginal propensity to save also remains constant when the GDP rises. Between each two GDPs the MPS is equal to $________ divided by $________, or to _______.

goldreindeer163

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.

indigognu668

01:220:103 Chapter Notes - Chapter 15: Potential Output, Arthur Melvin Okun, Inventory Investment

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