Sunday, March 27, 2016

AP MACROECONOMICS UNIT 4 VIDEOS


AP Macroeconomics Unit 4 - Part 1
·           Types of money:
1.commodity money- A good that has other purposes that also functions as money. Ex. Cows as money (MOST PREMATIVE)
2. Representative money- whatever you use as currency, represents a specific quantity of a precious medal. (gold Standard) drawback, value of the medal changes, effects value of currency.
3.Fiat money- money that is not backed by precious medal, legal tender, money must be accepted by transactions, value backed by the government.
·           Functions of money:
1.Medium of exchange- through money that exchanges happen.
2.Store of value- expect money to be stable. Putting money aside.
3.Unit of account-priceàworth (quality) ex. Named Brands

AP Macroeconomics Unit 4 - Part 3
·           price- interest rate (X axis)
·           Quantity- Y Axis
·           Demand slopes down (DM-demand for money)
·           Supply of money is vertical (Fixed unless FED moves it)- doesn’t vary on interest rate
·           FED government tax credit for 1st home buyer- increase demand for money
-When you increase demand you put upward pressure on interest rate
·           if FED wants to bring interest rate down, shift the supply of money to the right.
·           FED want to stabilized interest rate, if not then you cannot predict the level of investment and the level intransitive consumer spending, thus not able to manipulate aggregate demand to give you the right kind of economic change at the time.

AP Macroeconomics Unit 4 - Part 4
·           The FED: Tools of Money Policy-
Expansionary (Easy Money) increase
Contractionary (Tight Money) decrease
Reserve Requirement
Lower it
Raise it
Discount rate
Lower it- Doesn’t mean banks will borrow money (an Incentive)
Raise it
(Most Used) Buy/Sell gov’t bonds/ securities
FED buys bonds
(buy bonds= Big bucks)
FED sells Bonds
(FOMC does this)

·           Discount rate- the rate at which banks can borrow money from the FED.
Why? Short term- bank needs to meet its liquidity need.
·           Function of the FED- Lender as a last resort.
·           Federal Funds Rate- rate a which banks borrow money from each other.



AP Macroeconomics Unit 4- part 7

  • When the interest rate is low people demand more money and when the interest rate is high people get discouraged from borrowing money. 
  • Decrease in supply it reduces the national supply of loanable funds it decreases amount available in savings.
  • The money people save becomes more money for the banks to use as loans.
  • Increase in demand for loanable funds increases the interest rate.
AP Macroeconomics unit 4- part 8

  • In the money creation process banks create money by making loans.
  • More money is made due to multiplier deposit expansion and adding loans would give the same amount of money if we don't use excess reserves.
  • If a certain amount of money is deposited into a bank than the bank can loan less money until there isn't any more money left from that original deposit. 
  • By adding the all the loans given you get your potential total increase
AP Macroeconomics unit 4- part 9
  • In deficit spending government borrows money from americans. 
  • In a MKT graph demand for money increases in interest rates.
  • When the demand for money increases national supply in loanable funds is reduced.
  • The Fisher effect is the rule of interest rate and inflation rate being equal to each other 

Friday, March 4, 2016

Automatic or built-in-stabalizers

February 29, 2016

Automatic or built-in-stabilzers

  • anything that increases the governments budget deficit during a recession and increases it's budget surplus during inflation.
  • DOES NOT REQUIRE GOVERNMENT ACTION
  • Unemployment compensation, Medicaid, Medicare, Wellfare, VA Benefit, Social Security



  • progressive tax system 

- Average tax rate (tax revenue/ GDP) rises with GDP
GDP rises = tax rises

  • Proportional tax system

-average tax rate remains constants GDP Changes

  • Regressive tax system 

-average tax rate falls with GDP


Discretionary v. Automatic fiscal policies

February 29, 2016

Discretionary v. Automatic fiscal policies

  • Discretionary- increasing or decreasing government spending taxes in order to return economy to full employment involves policy makers to solve problems
  • Automatic- unemployment compensation and marginal tax rates are examples of automatic policies that help mitigate the effect of excision and inflation automatic fiscal policy takes place without policy makers






Fiscal Policy

February 29, 2016

Fiscal policy

  • Expansionary and contractionary policy deficits and surpluses built-in-stabality
What it does:

  • changes in the expenditures or tax revenues of the federal government
-2 tools of fiscal policy

  1. Taxes- government can increase or decrease taxes
  2. spending- government can increase or decrease spending
Deficits, surpluses, and dept

  • Balanced budget
-revenues = expenditures

  • Budget deficit
-revenues < expenditures

  • Budget surplus
-revenues > expenditures

  • Government debt
-sum of all deficits- sum of all surpluses
  • government must borrow money when it runs a budget deficit
  • government borrows from
-individuals
-corporations
-financial institutions
-foreign entities or foreign
Fiscal policies two options
  • Discretionary fiscal policy (action)
  • Expansionary fiscal policy: think deficit
  • Contractionary fiscal policy: think surplus
  • Non- Discretionary fiscal policy ( no action)


Spending multiplier effect

February 25, 2016

Spending multiplier effect

  • An initial change in spending (C, Ig, G, Xn) causes a larger change in aggregate spending or Aggregate demand (AD)
-multiplier = change in AD/ change in spending
-multiplier = change in AD/ change in C, I, G or X

Calculations for spending multiplier

  • get calculated from MPC or the MPS
  • multiplier= 1/r-MPC or 1/MPS
  • multipliers are (+) when there is an increase in spending and (-) when there is a decrease
Calculating tax multiplier 

  • When the government taxes, the multiplier works in reverse
  • Money is leaving the circular flow
  • tax multiplier is negative
  • =-MPC/1-MPC or -MPC/MPS
  • Tax-cut then the multiplier is +, because now there is more in the circular flow

Thursday, March 3, 2016

Consumption and Savings

February 25, 2016
Disposable income (DI)

  • income after taxes or net income
  • DI = gross income-taxes
(spender save)

2 choices 

  • with disposable income, households can either
-consume (spend money on goods and devices)
-save ( not spend money on goods and services)


Consumption

  • Household spending
  • ability to consume is constrained by
-The amount of disposable income
-propensity to save


  • Do households consume if DI= 0
-automatics consumptions

Savings

  • household NOT spending
  • ability to save is constrained by
-the amount of disposable income
-propensity to consume

  • Do households save if DI= 0 no.
APS & APC

  • APC+APS=1
  • 1-APC=APS
  • 1-APS=APC
  • APC >1 : dissaving
  • -APS : dissaving
(MPC) Marginal propensity to consume

  • fraction of any change in disposable income that is consumed
  • mpc= change in consumption/ change in disposable income
Marginal propensities

  • MPC+ MPS= 1
  • MPC = 1-MPS
  • MPS= 1-MPC
  • EITHER SPEND OR SAVE



Classical and Keynesian Schools

February 24, 2016

Classical school

  • competition is good
  • believe in the indivisible hand
  • economy will balance at full employment
  • economy is always to or at full employment
  • trickle down effect


Keynesian school

  • competition is flawed
  • AD is the key NOT AS
  • leaks and savings cause recessions
  • ratchet effects and sticky, wages bucks say's law
  • in the long-run we are dead


What is investment

February 23, 2016
What is Investment

  • money spent or expenditures on:
(new plants, factories)
-capitol equipment
-technology (hardware and software)
-new homes
-inventories (goods sold by producers)

Expected rates of return

  • How does business make investment decisions?
-cost/benefit analysis

  • How does business determine the benefits?
-expected rate of return

  • How does business count the cost?
-interest cost

  • How does business determine the amount of investment they undertake?
- compare expenditure rate of return to interest cost

  • expected return > interest cost. INVEST, expect return < interest cost DO NOT INVEST
REAL (r%) v. NOMINAL (i%)

  • What's the difference?
-nominal is observable rate of interest. Real subtracts put inflation (n%) and is only known ex post facto.

  • How do you compute the real interest rate (r%)?
-r%= i% -n%

  • What then determines the cost of an investment decision?
-The interest rate (r%)
Investment demand curve
Shape of the demand curve
-downward sloping

  • Why?
-interest rates are high, fewer investment are profitable; when interest rates are low, more investments are profitable.

Shifts investments demand (ID)
-costs of production
-lower costs shifts ID ->
-higher cost shift ID <- p="">
business taxes
-low business ID ->
-higher business ID <- p="">-technological change
-New technology ID ->
-lack of tech. ID <- p="">-stuck of capital
-economy is low on capital ID ->
-economy has much capital ID <- p="">expectations

  • positive expectations shift ID ->
  • negative expectations shifts ID <- li="">


Tuesday, March 1, 2016

Input prices

February 22, 2016

Input Prices

Domestic resource prices
-wages (75% of all business costs)
-capitol cost
-raw materials (commodity prices)
Foreign resources prices
-strong $ = low foreign resource price
-weak $ = higher foreign resource prices
Market power
-increase in resource prices = SRAS ß
-decrease in resource prices = SRAS à
Productivity
Total output/total inputs = productivity
·           More productivity = lower unit production cost = SRAS 
·           Lower productivity = higher unit production cost = SRAS 
Legal- institutional environment
·           taxes and subsidies
-taxes ($ to government) on business increase per unit production cost = SRAS 
-subsidies ( $ from government) to business reduce per unit production cost = SRAS 
Government regulation
-government regulation creates cost compliance = SRAS 
-deregulation reduces compliance cost = SRAS 

Full employment
·             Full employment occurs where AD intersects SRAS and LRAS at the same point

Recessionary gap
·             Recessionary gap exists when equilibrium occurs below full employment output

Inflationary gap
·             An inflationary gap exists when equilibrium occurs beyond full employment output 

Changes in AD
·           Change in consumption (c)
-c ^: AD : GDPr ^ & PL ^: U% v 
-c v: AD 
·             Change in gross private investment (Ig)
-Ig ^: AD 
-Ig v: AD 
·             Government spending (G)
- G ^ : AD 
- G v : AD 
·             Net exports (Xn)
-Xn ^ AD 
-Xn v AD 





Changes in SRAS
·             Input prices
- input prices v : SRAS 
- input prices ^ : SRAS 
·             Productivity
-productivity ^ : SRAS 
-productivity v : SRAS 
·             Legal-institutional environment
- deregulation : SRAS 
- regulation : SRAS 




 Nominal wages- the amount of money received by a worker per unit of time (how much you make)
Real wages- amount of goods and services that a worker car purchase with their nominal wages (purchasing power of nominal wages)
Sticky wages-  nominal wage level that is set according to an initial level and does not vary due to labor contracts or other restrictions.
Output- depends upon changes in the employment level. Output depends upon changes in price and employment level output is independent in changes in price level.

Keynasian
Range



Classical range

price
Wages

Employment level
implications
recession
fixed
fixed
flexible

Intermediate
flexible
fixed
flexible

inflation
flexible
flexible
fixed