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Transcript of FINAL REVIEW AP MACROECONOMICS. Unit One: Intro to Economics Graphs: PPC, Circular Flow Big...
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FINAL REVIEW
AP MACROECONOMICS
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Unit One: Intro to EconomicsGraphs: PPC, Circular FlowBig Concepts: Comparative and Absolute
Advantage, Circular Flow of Economic Activity
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Circular Flow of Economic Activity
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FundamentalsFundamental problem in economics is
scarcityOpportunity cost-next best alternative.
Adam Smith-Invisible hand, self-interest, justifies a market
Macro-Whole economyMicro-Part of the economy (firms and
households)
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3 EconomiesMarketTraditionalCommandMIXED-Mix of market and government, its
what we have
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Growth, or AS/LRASSources of Growth
Quantity and quality of human and natural resources increase
Amount of capital goods or stock increaseTechnology increases productivity
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Unit Two: Supply and DemandGraphs: Supply and DemandBig Concepts: Price Ceilings and Floors
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FundamentalsLaw of Demand-As price rises, quantity
demanded falls (D is downward sloping)Law of Supply-As price rises quantity
supplied rises (S is upward sloping)Quantity Demanded-Points on a demand
line.Quantity Supplied-Points on a supply line.
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Ceilings and FloorsPrice Ceiling-Below equilibrium, causes
more quantity to be demanded than is willing to be supplied (shortage).
Price Floor-Occurs above equilibrium, causes more to be supplied than is demanded (surplus).
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Unit Three: GDP, Unemployment and InflationGraphs: AD/AS, Phillips CurveBig Concepts:
CPI, GDP Deflator and Inflation CalculationsTypes of Unemployment GPD CalculationWho is hurt and helped by inflation?
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Business CycleRecession-Decreased GrowthExpansion-Increased Growth
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GDP 1Nominal GDP has not been adjusted for
inflationReal GDP is output that HAS been
adjusted for inflationGDP-Gross (Total) Domestic (In America)
Product (Stuff Produced). GDP is the total amount of stuff produced in America in a given year.
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GDP2Things that count in GDP:
Additions to business inventories Rent and other services like a financial consultant. Final output at final prices
Things that don’t count in GDP: Household work Intermediate Goods Illegal activity Stuff from last year’s inventories Secondhand goods Stocks and Bonds
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GDP (and AD) ComponentsConsumption-consumer purchasesI-Investment by businesses, strongly
influenced by interest rates.G-Government spending, fiscal policyNX-Net exports, exports-imports.
Depreciation increases NX as exports increase and imports decrease.
Appreciation decreases NX as exports decrease and imports increase.
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Unemployment 1Four Types
Frictional-I’m between jobs (or dates)Structural-My skills don’t match the existing
jobs (or girls)Cyclical-Caused by a recession, this is all
unemployment below full-employment. Expansionary policy targets this.
Seasonal-Freebie.
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Unemployment 2Labor force-people over 16, not in the
army, who are able and willing to work.Part time workers count as EMPLOYED.
NRU-Natural Rate of Unemployment=LRPCStructuralFrictional-Can be changed via changes in unemployment compensation.
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Inflation 1Inflation-a rise in the price level over timeConsumer Price Index (CPI)-measures price level
over time using a market basket of goods.GDP Deflator-uses output of economy as market
basket.Another way to find inflation: solve for it given
nominal interest rates-real interest rates=inflation.
Demand-pull Inflation-Demand for goods causes prices to rise.
Cost-push-Decreases in Supply causes prices to rise.
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Inflation 2Calculate rate of
inflation:
Quantities in Market Basket
Price in Base Year
Price in Current Year
Shoes 3 $15 $20
Foot-Long Subs
5 $5 $6
Guns 1 $30 $40
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Inflation Rate=30% from base year to current
GDP Deflator=100 in base and 130 in current
Real GDP=Nominal GDP/Inflator
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Inflation: Who is hurt and helped?Helped:
People with fixed rate loansHurt:
People on a fixed incomeLenders of fixed-rate loansSavers in fixed-rate accounts
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AD/AS 1Potential Output-Output when an economy
is at its full employment (LRAS) point.If the price level changes it DOES NOT
CHANGE AD or AS!LRAS is vertical because price level
changes will not effect available resources or productivity in the long-run.
Inflationary Gap-Equilibrium occurs AFTER full-employment (overheating)
Recessionary Gap-Equilibrium occurs BEFORE full-employment (recession)
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Supply ShocksPositive Supply Shocks
Increase ASNegative Supply Shocks
ContractionaryDecrease ASCause Stagflation
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AD is downward sloping because…1. Wealth Effect- as price level goes down
people feel richer and buy more.2. Interest Rate Effect-Lower price levels
(inflation) means there is a lower interest rate, so output would go up.
3. International Effect-A decrease in the price level causes our stuff to feel cheaper, which causes exports and output to rise.
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Unit Four: Fiscal PolicyGraphs: Loanable FundsBig Concepts: Balanced Budget Multiplier
and MPC Math, Fiscal Policy
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MOST IMPORTANT SLIDE EVERFiscal Policy Taxes Government
Spending
Expansionary Cut Taxes Increase Government Spending
Contractionary Raise Taxes Cut Government Spending
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When do you use fiscal policy?Expansionary Policy -> When you have
cyclical unemployment and are in a recession
Contractionary Policy -> When you have inflation and want price stability
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Criticisms of Fiscal PolicyLag Time-Government is slow (IE,
everything we learned in AP Gov)Crowding Out-Increased deficit spending
can raise interest rates and crowd out private investment, offsetting the goal of increased AD
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StabilizersThe federal government is set up with automatic
stabilizers that use expansionary policy in a recession, and contractionary in inflationary phases.
Discretionary Spending-Congress has to approve spending.
In a recession: Tax receipts go down so taxes are in effect, CUT. More people are unemployed so unemployment
compensation would go UPThe opposite of this would happen in an
inflationary phase.This process avoids a lot of the difficulties in
using fiscal policy as it is automatic.
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TermsDeficit-When expenditures (spending)
exceeds revenue (taxes).Deficits are funded through the selling of
bonds in open-market operations.Surplus-Revenues exceed expenditures.Debt-Total amount of accumulated
deficits.
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Classical EconomistsGiven flexible prices and wage, a classical
economist would deal with a recession by doing nothing.
They believe this would cause wages to drop ( as employers cut costs) and thus increasing AS back to full-employment.
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Keynesian EconomistsArgue that wages and prices aren’t
flexible, and that decreased wages would cause AD to decrease even more.
He argues that the government must take action and increase AD through government spending and tax cuts (fiscal policy).
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MPC and Balanced BudgetMPC is Marginal Propensity to ConsumeMPS is Marginal Propensity to SaveMPC + MPS = 1Government Spending or Expenditure
Multiplier is 1/MPS.Tax Multiplier is 1/MPS x MPC.Balanced Budget Concept-Government
Spending has a greater effect on AD than tax cuts.
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Unit Five: Monetary PolicyGraphs: Money MarketBig Concepts: Reserve Requirement and
Money Expansion Math,
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FundamentalsInvestment-purchase of real assets (factories,
machines).INVESTMENT IS THE BEST. Increase I
increases AD in the short run and increases LRAS!
Monetary policy influences AD/AS by effecting interest rates.
Higher interest rates decrease AD.Lower interest rates increase AD.Theory of rational expectations-Increasing the
MS on its own doesn’t increase AD because if the inflation is expected, then buying habits won’t change.
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SECOND MOST IMPORTANT SLIDE EVERMonetary Policy Expansionary Contractionary
Open Market Operations
Buy Bonds Sell Bonds
Discount Rate Lower Raise
Reserve Requirement
Lower Raise
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TermsFederal Reserve-central bank, conducts Monetary
PolicyDiscount Rate-Short-term interest rate on loans
from the Federal Reserve to Banks.Federal Funds Rate-Short-term interest rate on
loans from one bank to another.Prime Rate-Prime lending rate a bank will give to
people with the best credit.Fractional Reserve Banking-When you deposit
money, banks only keep a fraction and lend out the rest, allowing the money supply to be expanded.
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MoneyFiat Money-money only backed by
government say so.3 Functions of Money
Store of Value-Can last for extended periods of time.
Unit of Account-can vary in prices.Medium of Exchange-can be traded for real
goods.
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The Money Supply
M1-Checkable Deposits (Checking Accounts) Cash and Coins IN CIRCULATION
M2M1Savings AccountsShort Term CD’s (Money Market Accounts)
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Quantity Theory of InflationMV=PQ
M is Money SupplyV is velocity of moneyP=Price LevelQ=Quantity of Real Goods SoldPQ=Nominal GDP
Assume V is constant, thus MS changes will change Nominal GDP.
Q is also unrelated to changes in MS, so price level is most directly effected by changes in MS.
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Unit Six: International Trade
Graphs: Foreign Exchange Market
Big Concepts: Balance of Payments, Comparative and Absolute Advantage
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TermsBalance of Trade: Exports-ImportsBalance of Payments: Current Account –
Capital/Financial AccountCurrent: All real goods and services
traded between countries.Capital/Financial: All loans
(inflows/outflows) that will have to be paid back at some point.
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Complex DetailsInflationary Expections-If a questions says
this phrase, its referring to producers changing supply based on inflation.Lower than expected inflation-cut input costs
thus increasing AS