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Chapter 10. Measuring a Nation’s Income. Macroeconomics. Macroeconomics is the study of the economy as a whole. Its goal is to explain the economic changes that affect many households, firms, and markets at once.

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chapter 10

Chapter 10

Measuring a Nation’s Income

macroeconomics
Macroeconomics
  • Macroeconomics is the study of the economy as a whole. Its goal is to explain the economic changes that affect many households, firms, and markets at once.
  • Microeconomics is the study of how individual households and firms make decisions and how they interact with one another in markets.
understanding the economy
Understanding the Economy
  • Identify the important areas:
    • Total output (and income)
    • The average of prices
    • Resource employment
  • Measure the important areas using:
    • Real Gross Domestic Product
    • Consumer Price Index
    • Monthly unemployment rate
the circular flow diagram
The Circular-Flow Diagram

Product Market

$

$

Businesses

Households

$

$

Market for Factors of Production

two methods of computing an economy s income
Two Methods of Computing An Economy’s Income
  • Expenditure Approach:
    • Sum the total expenditures by households (from the top portion of the circular flow).
  • Resource Cost or Income Approach:
    • Sum the total wages and profit paid by firms for resources (from the bottom portion of the circular flow).
the economy s income and expenditure
The Economy’s Income and Expenditure
  • When judging whether the economy is doing well or poorly, it is natural to look at the total income that everyone in the economy is earning.
  • For an economy as a whole, income must equal expenditure.
  • The forces of supply and demand determine the market equilibrium price and quantity that is produced and exchanged.
the economy s income and expenditure7
The Economy’s Income and Expenditure
  • A measure of the income and expenditures of an economy is Gross Domestic Product (GDP).
  • Gross Domestic Product measures:
    • an economy’s total expenditure on newly produced goods and services and the total income earned from the production of these goods and services
gross domestic product
Gross Domestic Product

The total market value of all final goods and services produced during a given period of time within a country, region, or state.

important features of gdp
Important Features of GDP
  • Output is valued at market determined prices.
  • Output is measured in dollar terms.
  • GDP records only the output of final goods. We want to “count” production only once.
  • Represents the amount of money one would need to purchase a year’s worth of the economy’s production of all final goods ($7,000,000,000,000).
what is and what is not counted in gdp
What Is and What Is Not Counted in GDP?
  • GDP includes all items produced in the economy and sold legally in markets.
  • GDP does not include items produced and consumed at home and never enter the marketplace. It does not include items produced and sold illicitly, such as illegal drugs.
gross national product
Gross National Product

The total market value of all final goods and services produced during a given period of time by the nation’s residents, regardless of the place produced.

quick quiz
Quick Quiz!
  • Which contributes more to GDP: the production of a pound of hamburger or the production of a pound of caviar? Why?
three other measures of income
Three Other Measures of Income
  • Net National Product (NNP):
    • Total income of residents of a nation after subtracting capital consumption allowances.
  • Personal Income:
    • The income that households and non-corporate businesses receive.
  • Disposable Personal Income:
    • The income that household and non-corporate businesses have left after taxes.
the components of gdp
The Components of GDP
  • GDP (Y) is the sum of:
    • Consumption (C)
    • Investment (I)
    • Government Purchases (G)
    • Net Exports (NX)

Y = C + I + G + NX

the four components of gdp
The Four Components of GDP
  • Consumption (C):
    • Is the spending by households on goods and services
      • e.g. buying clothing, food, movie tickets
  • Investment (I):
    • Is the purchases of capital equipment and structures
      • e.g. factory, houses, etc.
the four components of gdp16
The Four Components of GDP
  • Government Purchases (G):
    • Includes spending on goods and services by local, state and federal governments (e.g. roads, police, etc.).
    • Does not include transfer payments, because it is not made in exchange for currently produced goods or services.
  • Net Exports (NX):
    • Exports minus imports.
gdp components of measurement19
GDPComponents of Measurement

Investment

13%

Consumption

69 %

gdp components of measurement20
GDPComponents of Measurement

Government

Spending

19%

Investment

13%

Consumption

69 %

gdp components of measurement21
GDPComponents of Measurement

Government

Spending

19%

Investment

13%

Net Exports

-1 %

Consumption

69 %

slide22

The Income Approach

  • Components:
    • Wages (73.0%)
    • Interest (9.5%)
    • Rents (.5%)
    • Profits (17.0%)
  • We must also include taxes and depreciation for accurate accounting
quick quiz23
Quick Quiz!
  • List the four components of expenditure.
  • Which is the largest?
real versus nominal gdp
Real versus Nominal GDP
  • GDP is the market value of the economy’s current production, referred to as Nominal GDP.
  • Real GDP measures any given year’s total output in “constant” prices.
  • An accurate view of the economy requires adjusting nominal to real GDP, using the GDP Price Deflator.
nominal gdp
Nominal GDP
  • Calculated as the sum of Prices in a year times quantities in a year
  • 1999: $1x10+$2x5=$20
  • 2000: $2X10+$4x5=$40
  • 2001: $3x5+$6x10=&75
  • Question: Is this an accurate measure of how much we produce?
  • Compare 1999 and 2000 to see!
real gdp
Real GDP
  • Calculated as sum of base year prices times quantities each year
  • Let’s make 1999 the base year
  • 1999: $1x10+$2x5=$20
  • 2000: $1x10+$2x5=$20
  • 2001:$1x5+$2x10=$25
  • Is this a more accurate measure of output?
gdp deflator
GDP Deflator
  • Just the ratio of nomimal GDP to real GDP times 100
  • 1999:$20/$20 x 100 = 100
  • This is an index, always 100 for the base year
  • 2000:$40/$20 x 100 = 200
  • 2001:$75/$25 x 100 = 300
  • What does it mean?
gdp price deflator
GDP Price Deflator
  • The GDP Price Deflator is a price index that uses a bundle of all final goods and services.
    • It tells us the rise in nominal GDP that is attributable to a rise in prices.
  • Converting Nominal GDP to Real GDP:

Real GDP19xx =

(Nominal GDP19xx ) ÷ (GDP deflator19xx)X100

quick quiz30
Quick Quiz!
  • Define Real and Nominal GDP.
  • Which is a better measure of economic well-being? Why?
gdp and economic well being
GDP and Economic Well-Being
  • GDP Per Person tells us the income and expenditure of the average person in the economy.
    • It is a good measure of the material well-being of the economy as a whole.
    • More Real GDP means we have a higher material standard of living by being able to consume more goods and services.
    • It is NOT intended to be a measure of happiness or quality of life.
gdp and economic well being32
GDP and Economic Well-Being
  • Some factors and issues not in GDP that lead to the “well-being” of the economy:
    • Factors that contribute to a good life such as leisure.
    • Factors that lead to a quality environment.
    • The value of almost all activity that takes place outside of the markets, e.g. volunteer work and child-rearing.
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