ECON 102 Lecture 14: Aggregate Demand and Multiplier Effect

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3 Nov 2014

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Econ 102 - principles of macroeconomics - chapter 24 (lecture 14): aggregate demand and multiplier effect. See how aggregate expenditure, consumption and imports are influenced by real gdp. Income increases, and these 2 factors also increase. Increase in real gdp increases aggregate expenditure. Therefore, consumption can be drawn as a function. Therefore, savings can also be a function. 45 degrees draws out where c = y (consumption equals income) When income = 0, consumption still exists (even people who do not have income need to buy the life"s necessities) Therefore the slope of consumption function is always less than 1 (less than the 45 degrees line) A representation of the appearance of consumption functions. The slope of the consumption function will always be less than that of the 45 degrees line. Slope of the function: change in consumption / change in income = marginal propensity to consume. If consumption is less than income, there are negative savings (dissavings)

Related Questions

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

In the Keynesian model

aggregate demand determines real GDP per year.

the short-run aggregate supply curve determines real GDP.

unemployment cannot persist for long periods of time.

the aggregate demand curve determines the price level.

A terrible winter storm causes enormous problems in the

northeastern

part of the United States. This would cause

the short-run aggregate supply curve to shift to the left, but would have no effect on the long-run aggregate supply curve.

both the short-run and the long-run aggregate supply curves to shift to the left, but the long-run aggregate supply curve would shift more than the short-run curve.

the short-run aggregate supply curve to shift to the left, and the long-run aggregate supply curve would shift to the right.

both the short-run and the long-run aggregate supply curves to shift to the right in equal amounts.

Equilibrium real GDP rises after the dollar strengthened. From this we can conclude that

the increase in aggregate demand was greater than the decrease in aggregate supply.

the decrease in aggregate demand was more than the increase in aggregate supply.

the decrease in aggregate demand was less than the increase in aggregate supply.

the increase in aggregate demand was less than the decrease in aggregate supply.

Saving is

the difference between real GDP and disposable income while savings is the difference between disposable income and consumption spending.

the amount one does not consume in a given period of time while savings is the accumulation of past periods of saving.

the difference between disposable income and spending on goods and serviceswhile savings is the difference between real GDP and disposable income.

the accumulation of past periods of savings while savings is the amount of disposable income that is not consumed in a given period of time.

A permanent reduction in investment spending leads to

a proportional decrease in real GDP.

a more than proportional decrease in real GDP.

a more than proportional increase in real GDP.

a less than proportional decrease in real GDP.

An increase in net exports leads to an increase in real GDP. Further,

consumption spending increases while investment spending decreases.

consumption spending increases but saving does not change.

consumption spending and saving increase.

government spending decreases to offset the increase in net exports.

An increase in aggregate spending that is caused by a factor other than the price level will lead to the

aggregate demand curve shifting to the right.

aggregate supply curve shifting to the right.

aggregate supply curve shifting to the left.

aggregate demand curve shifting to the left.

The marginal propensity to consume is 0.9. The multiplier is

0.9.

1.11.

0.1.

10.

When the SRAS curve slopes upward, the actual affect of an increase in real autonomous spending on equilibrium real GDP is smaller than predicted by the multiplier because

real GDP increases.

the price level rises

the price level falls.

real GDP decreases.

Other things equal, the lower the total real value of final goods and services demanded in the economy the

more the production possibilities cure shifts to the left.

lower the price level.

higher the price level.

lower the level of endowments.

The long-run aggregate supply curve can be thought of as the

level of output for which real GDP equals nominal GDP.

level of output that the nation is currently producing.

level of real GDP associated with a constant price level.

full-employment level of real GDP.