Tuesday, February 9, 2016

Circular Flow Model, GDP, Inflation, and Unemployment



Circular Flow

  • Circular flow represents transactions within an economy, looking in a broad sense
  • The goods and services flow clockwise in a circular flow model


 Economic Factors
  • Households- person or group of people that share their income
  • Government: can refer to local or national
  • Firm- an organization that produces goods & services for sale

Markets
  • Resource/Factor Market- households sell resources and firms buy them
  • Product Market- firms produce goods and services, and households buy them



Image result for circular flow model





Gross Domestic Product

  • market value of all final goods and services produced within a nation within a given year
Not Included in GDP
  • Intermediate goods- goods that require further processing before they are ready for final use
  • Used/Secondhand goods- trying to avoid double counting
  • Purely financial transactions- stocks and bonds
  • Unreported business activity- unreported tips; underground market
  • Non-market activities-anything you do for yourself; volunteering
  • Transfer payments- public such as social security or private transfer payments such as scholarships

Included in GDP
  • C- personal consumption expenditures- wages, etc.
  • Ig-Gross private domestic investments- new factory equipment, factory equipment maintenance, construction of housing, unsold inventory of products built in a year
  • G- government spending
  • Xn- net exports- (exports-imports)

Formulas
  • Expenditure approach- C + Ig + G + Xn
  • Income Approach- W(wages) + R(rent) + I(interest) + P(profits)
  • Nominal GDP- Price of current year x quantity of current year
  • Real GDP- Price of base year x quantity of current year 
  • Net Domestic Product(NDP) - GDP- depreciation
  • Net national product(NNP)- GNP- depreciation
  • GNP- GDP + Foreign factor payment
  • Budget surplus/deficit- government purchases- government taxes and fees collection + government transfer payments
  • Trade Surplus/deficit- Exports- imports
  • National income- GDP- indirect business taxes-depreciation-net foreign factor payment 
  • Disposable income- national income-personal household taxes + government transfer payments






Inflation

  • general increase in prices and fall in the purchasing value of money
GDP Deflator
  • price index- used to adjust from nominal to real
  • (nominal GDP/ real GDP) x 100
  • in base year, the GDP deflator will always equal 100
  • for years after the base year, GDP deflator is greater than 100
  • for years before the base year, GDP deflator is less than 100

Consumer Price Index (CPI)
  • most commonly used measurement for inflation
  • measures the cost of a market basket of goods for a typical urban American family
  • (cost of market basket of goods in given year/ cost of market basket of goods in base year) x 100

Inflation
  • [(price index in year 2 - price index in year 1) / price index in year 1] x 100

Interest Rate
  • Nominal Interest Rate- percentage increase in money the borrower must pay the lender for a loan; not adjusted for inflation; Expected interest rate + inflation premium
  • Real Interest Rate- percent increase in purchasing power the borrower must pay the lender for a loan; adjusted for inflation; nominal interest rate- inflation
  • Hurt by inflation- savers, those on a fixed income, creditors and debtors
  • Helped by inflation- debtors
  • Cost of living adjustment(COLA)- automatic wage increase when inflation occurs






Unemployment

  • failure to use available resources, particularly labor to produce desired goods and services
  • Underemployment- not using resources effectively

Labor Force
  • above 16 years old of age
  • able/ willing to work
  • employed and unemployed
  • Not in labor force- military, students, retired, disabled, home makers, mental institutions, people in prison, those not looking for a job

Unemployment Rate
  • [ # of employed / ( # of employed + # of unemployed)] x 100
  • full employment/ natural rate of employment- 4-5 percent

Types of Unemployment
  • Frictional- searching for a job, temporarily unemployed or in between jobs; have transferable skills; better opportunity; HS and college graduates
  • Structural- changes in structure of the labor force, which makes some skills and jobs obsolete; does not have transferable skills
  • Seasonal- depends on the time of year and nature of the job, school bus drivers, life guards, etc.
  • Cyclical- results from economic downturn such as a recession, as demand for goods fall, demand for labor falls as well, and workers are laid off
  • Frictional + Structural = NRU
  • Full employment- no cyclical unemployment
  • GDP Gap- amount by which actual GDP falls short of potential GDP
  • Okun's Law- for every 1% in which actual unemployment rate exceeds NRU, a GDP gap of about 2% exists
  • Rule of 70- amount of years to double income= 70/ growth rate






Sunday, January 24, 2016

Introduction to Economics



Macroeconomics
  • international trade
  • minimum wage
  • supply and demand
Microeconomicsstudy of the individual or specific units of the economy 
(comparable to a tree)
  • market structures
  • business organizations
Positive v. Normative Econmics
  • Positive economicsattempts to describe the world as is; presents facts
  • Normative economics- attempts to prescribe how the world should be; presents opinions
Needs v. Wants
  • Needs- basic requirements for survival
  • Wants- desires of citizens; PS4
Goods v. Services

Goods- tangible commodities 
  • Capital Goods- items used in the creation of other goods
  • Consumer Goods- goods that are intended for final use by the consumer
Serviceswork performed for someone; doctor, barber, etc.

Scarcity v. Shortage
  • Scarcity- The most fundamental economic problem that a society faces; satisfying unlimited wants with limited resources
  • Shortagequantity demanded is greater than quantity supplied
Factors of Production
  • Land: Natural Resource
  • Labor: Work Force
  • Capital: two types
    • Human Capital: Is gained through work experience and education (Skills, Talent, Abilities)
    • Physical Capital: Resources required to produce goods
  • Entrepreneurship: 
    • innovator
    • risk-taker

Production Possibilities Graph

  • Shows alternative ways to use economic resources
  • known as PPC (Production Possibilities Curve) or PPF (Production Possibilities Frontier)
  • 3 movements of the PPC:
    • Inside the PPC 
    • Along the PPC 
    • Shifts outside the PPC
    • causes for the PPC to shift
      • 1. Technological changes
      • 2. Change in resources
      • 3. Economic growth
      • 4. Natural Disasters/War/Famine
      • 5. Change in labor force
      • 6. More education: training(human capital) 
  • Assumptions of the PPG
  1. Two goods
  2. fixed resources
  3. fixed technology
  4. technical efficiency 

Image result for production possibilities curve


Price Elasticity of Demand

  • Elasticity of Demand- measure of how consumers react to a change in price
  • Elastic Demand- demand that is very sensitive to a change in price. E>1, the product is not a need, substitutes are available
  • Inelastic Demand- demand that is not very sensitive to a change in price. E<1, product is a need, few to no substitutes
  • Unitary Elastic- E=1
Price Elasticity of Demand
  • Step 1: Quantity   (New Quantity - Old Quantity)/(Old Quantity)
  • Step 2: Price        (New Price - Old Price)/ (Old Price)
  • Step 3: PED         (% change in quantity demanded)/ (% change in price)
Image result for price elasticity of demand


Supply and Demand

Supply: The quantities that producers or sellers are willing and able to produce at various prices
  • The Law of Supply: There is a direct relationship between price and quantity supplied.
  • Change in price causes a change in quantity supplied
  • What causes a change in supply?
    • 1. Change in Weather
    • 2. Change in Technology
    • 3. Change in the cost of production
    • 4. Change in the number of sellers
    • 5. Change in taxes or subsides
    • 6. Change in Expectations
Demand: The quantities that people are willing and able to buy at various prices
  • The Law of Demand: There is an inverse relationship between price and quantity demanded.
  • Change in price causes a change in quantity demanded
  • causes for a change in demand
1. Change in buyer's taste

2. Change in the number of buyers

3. Change in income
    • inferior goods: Increase in income, Decrease in demand
    • normal goods: Increase in income, Increase in demand
4. Change in the price of related goods
  • complementary goods: They go together
  • substitute goods: Can be substituted for
5. Change in Expectations
Total Revenue: The total amount of money a firm receives from selling good and services
  • (Price) x (Quantity)
Fixed Cost: A cost that does not change no matter how much is produced; such as rent and mortgage

Variable Cost: A cost that rises/falls depending upon how much is being produced; such as an electricity bill

Marginal Cost: The cost of producing one more unit of a good 
  • (new total cost) - (old total cost)

Formulas
  • TFC + TVC = TC
  • AFC + AVC = ATC
  • TFC / Q = AFC
  • TVC / Q = AFC
  • TC / Q = ATC
  • AFC x Q = TFC
  • AVC x Q = TVC