Unit 2: Macro Measures 1.

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Unit 2: Macro Measures 1

Annual Inflation Rate- Time for Prices to Double- Goal #3 LIMIT INFLATION Country and Time- Zimbabwe, 2008 Annual Inflation Rate- 79,600,000,000% Time for Prices to Double- 24.7 hours

Calculations In an economy, Real GDP (base year = 1996) is $100 billion and the Nominal GDP is $150 billion. Calculate the GDP deflator. In an economy, Real GDP (base year = 1996) is $125 billion and the Nominal GDP is $150 billion. Calculate the GDP deflator. In an economy, Real GDP for year 2002 (base year = 1996) is $200 billion and the GDP deflator 2002 (base year = 1996) is 120. Calculate the Nominal GDP for 2002. In an economy, Nominal GDP for year 2005 (base year = 1996) is $60 billion and the GDP deflator 2005 (base year = 1996) is 120. Calculate the Real GDP for 2005. GDP deflator=150 GDP deflator=120 Nominal GDP=$240 billion Real GDP=$50

2008 Audit Exam D

2012 Audit Exam E

Three Causes of Inflation If everyone suddenly had a million dollars, what would happen? What two things cause prices to increase? Use Supply and Demand

3 Causes of Inflation 1. The Government Prints TOO MUCH Money (The Quantity Theory) Governments that keep printing money to pay debts end up with hyperinflation. Result: Banks refuse to lend so investment falls and people don’t save up to buy things. Examples: Bolivia, Peru, Brazil Germany after WWI

Quantity Theory of Money If the real GDP in a year is $400 billion but the amount of money in the economy is only $100 billion, how are we paying for things? The velocity of money is the average times a dollar is spent and re-spent in a year. How much is the velocity of money in the above example? Quantity Theory of Money Equation: M x V = P x Y M = money supply P = price level V = velocity Y = quantity of output Notice that P x Y is Nominal GDP

M x V = P x Y Why does printing money lead to inflation? Assume the velocity is relatively constant because people's spending habits are not quick to change. Also assume that output (Y) is not affected by the amount of money because it is based on production, not the value of the stuff produced. If the govenment increases the amount of money (M) what will happen to prices (P)? Ex: Assume money supply is $5 and it is being used to buy 10 products with a price of $2 each. How much is the velocity of money? b. If the velocity and output stay the same, what will happen if the amount of money is increase to $10? Notice, doubling the money supply doubles prices 9

Higher production costs increase prices 3 Causes of Inflation 2. Demand- Pull Inflation DEMAND PULLS UP PRICES!!! “Too many dollars chasing too few goods” An overheated economy with excessive spending but same amount of goods. 3. Cost-Push Inflation Higher production costs increase prices A negative supply shock increases the costs of production and forces producers to increase prices.

The Wage-Price Spiral A Perpetual Process: 1.Workers demand raises 2.Owners increase prices to pay for raises 3. High prices cause workers to demand higher raises 4. Owners increase prices to pay for higher raises 5. High prices cause workers to demand higher raises 6. Owners increase prices to pay for higher raises

Nominal vs. Real Interest Rates

Interest Rates and Inflation What are interest rates? Why do lenders charge them? Who is willing to lend me $100 if I will pay a total interest rate of 100%? (I plan to pay you back in 2050) If the nominal interest rate is 10% and the inflation rate is 15%, how much is the REAL interest rate? Real Interest Rates- The percentage increase in purchasing power that a borrower pays. (adjusted for inflation) Real = nominal interest rate - expected inflation Nominal Interest Rates- the percentage increase in money that the borrower pays not adjusting for inflation. Nominal = Real interest rate + expected inflation

Nominal vs. Real Interest Rates Example #1: You lend out $100 with 20% interest. Inflation is 15%. A year later you get paid back $120. What is the nominal and what is the real interest rate? Nominal interest rate is 20%. Real interest rate was 5% In reality, you get paid back an amount with less purchasing power. Example #2: You lend out $100 with 10% interest. Prices are expected to increase 20%. In a year you get paid back $110. Nominal interest rate is 10%. Real rate was –10%

Achieving the Three Goals The governments role is to prevent unemployment and prevent inflation at the same time. If the government focuses too much on preventing inflation and slows down the economy we will have unemployment. If the government focuses too much on limiting unemployment and overheats the economy we will have inflation   Unemployment Inflation GDP Growth Good 6% or less 1%-4% 2.5%-5% Worry 6.5%-8% 5%-8% 1%-2% Bad 8.5 % or more 9% or more .5% or less

2012 Audit Exam B