ECON102 Lecture Notes - Lecture 13: Unemployment, Aggregate Supply, Potential Output

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purplecoyote711

12 Nov 2018

School

University of Waterloo

Department

Economics

Course

ECON102

Professor

Dr. Ahmet Ozkardas

For unlimited access to Class Notes, a Class+ subscription is required.

CHAPTER 10- AGGREGATE DEMAND AND

AGGREGATE SUPPLY

• Aggregate means total.

• Pi(Q){profit}=price*quantity – cost*quantity

o =quantity(price-cost)

o Quantity= A(technology)*K^alpha(capital)*L^B(labor)

(don’t need to study, extra info)

• Total quantity of production firm plans to produce. Total

supply depends on capital (physical and human) & technology.

• In short run, only quantity of labor can be increased to

increase production.

• Full employment=natural unemployment which is 0 cyclical

unemployment.

• Potential GDP= real GDP at full employment.

• Aggregate supply is the quantity of real GDP supplied and the

price level.

o In long run, we can change all factors. In econ, we

believe that in long run, real GDP= potential GDP

o Price level increases from 10 to 20, and wages remain

constant, but we would expect to earn higher wages. So,

in the LR, the difference between prices and wages is

constant

o In the LR, wage rates increase in the same proportion as

price level, then aggregate supply won’t change

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Related Questions

1. In the long run, when prices are perfectly flexible:

a. aggregate supply is vertical and a market economy is self-correcting.

b. a market economy cannot self-correct.

c. government will be required to set prices to maintain equilibrium.

d. changes in aggregate demand cause equilibrium real GDP to change.

2. An increase in household wealth when the SRAS curve is upward sloping:

a. leads to an increase in the price level but has no impact on real GDP

b. has no impact on the price level but leads to an increase in real GDP

c. leads to an increase in both the price level and real GDP

d. has no impact on the price level or real GDP

3. In the long run, continued increases in aggregate demand not matched by similar increases in aggregate supply will cause:

a. an increase in the full-employment level of real GDP

b. a recessionary gap

c. a decrease in the price level

d. an increase in the price level

4. The vertical long-run aggregate supply curve implies that:

a. changes in aggregate demand will not affect the price level

b. the short-run aggregate supply curve is also vertical

c. natural or full-employment real GDP does not depend on the price level, in the long run

d. natural or full-employment real GDP is the same as the equilibrium real GDP in the short run

5. A rightward shift of the long-run aggregate supply curve illustrates:

a. economic growth

b. a recessionary gap

c. an inflationary gap

d. a decrease in natural real GDP

6. When the economy is in a recessionary gap

a. there is a surplus of labor

b. there is a shortage of labor

c. it is producing a real GDP level that is greater than natural real GDP

d. the unemployment rate is less than the natural unemployment rate

7. If the actual unemployment rate is less than the natural unemployment rate:

a. a recessionary gap exists and wages are likely to rise

b. an inflationary gap exists and wages are likely to rise

c. a recessionary gap exists and wages are likely to fall

d. an inflationary gap exists and wages are likely to fall

8. An economy in long-run equilibrium is producing:

a. a level of real GDP that is greater than its natural real GDP

b. where both the price level and real output are maximized

c. a level of real GDP equal to its natural real GDP

d. in the vertical range of aggregate demand.

crimsonreindeer720

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.