OUTLINE -- CHAPTER 6
Measuring the Economy

SEE REVIEW PAGE BY CLICKING HERE

FOR ONLINE LECTURE SEE: http://www.harper.cc.il.us/mhealy/eco212i/lectures/measecon/measecon.htm

 

I. Introduction

A. Macroeconomics
B. Measuring the Economy's Performance
1. real domestic output
2. price level

II. Measuring Real Domestic Output: GDP

A. GDP vs. GNP
  • "domestic" production vs. production by American "nationals" or citizen

    How would the value of output produced at an American-owned factory in the U.S. be treated in GDP accounting?

     

    • The value of output produced at an American-owned factory in the U.S. would be treated as part of domestic output in GDP accounting.

     

    How would the value of output produced at a foreign-owned factory in the U.S. be treated in GDP accounting?

     

    • The value of output produced at a foreign-owned factory in the U.S. would be treated as part of domestic output in GDP accounting.

     

    How would the value of output produced at an American-owned factory in Japan be treated in GDP accounting?

     

    • The value of output produced at an American-owned factory in Japan would NOT be treated as part of domestic output in GDP accounting.

 

B. Definition: GDP

1. definition

the total market value of a final goods and services produced in the economy in one year

2. market value: unit of measure for real domestic output

3. final goods: avoid double counting

a. final goods
b. intermediate goods

4. produced in one year

a. secondhand sales are not included
b. financial transactions not included

REVIEW: (Textbook Question 7-13)

Which of the following are actually included in this year’s GDP? Explain your answer in each case.

a. Interest on an AT&T bond.

b. Social security payments received by a retired factory worker.

c. The services of a family member in painting the family home.

d. The income of a dentist.

e. The money received by Smith when she sells her economics textbook to a book buyer.

f. The monthly allowance a college student receives from home.

g. Rent received on a two-bedroom apartment.

h. The money received by Josh when he resells his current-year-model Honda automobile to Kim.

i. Interest received on corporate bonds.

j. A 2-hour decrease in the length of the workweek.

k. The purchase of an AT&T corporate bond.

l. A $2 billion increase in business inventories.

m. The purchase of 100 shares of GM common stock.

n. The purchase of an insurance policy.

ANSWERS

 

C. Shortcomings of GDP (pp. 125-126)

GDP is often used a a meassure of Economic Well-Being in a country, but there are problems:

1. GDP doesn’t measure some very useful output because it is unpaid (homemakers’ services, parental child care, volunteer efforts, home improvement projects). Called non-market transactions

2. GDP doesn’t measure improvements in product quality unless they are incuded in the price.

3. GDP doesn’t measure improved living conditions as a result of more leisure.

4. GDP makes no value adjustments for changes in the composition of output. Nominal GDP simply adds the dollar value of what is produced; it makes no difference if the product is a semiautomatic rifle or a jar of baby food.

5. GDP makes no value adjustments for changes in the distribution of income. Per capita GDP may give some hint as to the relative standard of living in the economy; but GDP figures do not provide information about how the income is distributed.

6. GDP does not include output from the Underground Economy. Illegal activities are not counted in GDP (estimated to be around 8% of U.S. GDP). Legal economic activity may also be part of the “underground,” usually in an effort to avoid taxation.

7. GDP and the environment:

  • The harmful effects of pollution are not deducted from GDP (oil spills, increased incidence of cancer, destruction of habitat for wildlife, the loss of a clear unobstructed view).
  • GDP does include payments made for cleaning up oil spills and the cost of health care for cancer victims.
  • Resouce depletion could result in lower future output

8. Noneconomic Sources of well-being like courtesy, crime reduction, etc., are not covered in GDP.

9. GDP does not account for a possible future decline in output due to resource depletion.

10. Per-capita income should be used to compare the economic well-being of different countries.

Which country has a higher GDP, Switzerland or India? Which has a higher level of economic well-being:
  • Switzerland:
    • GDP: $239.3 billion (2003 est.)
    • Population: 7,450,867 (July 2004 est.)
    • GDP per capita: $32,700 (2003 est.)
  • India:
    • GDP: $3.033 trillion (2003 est.)
    • Population:1,065,070,607 (July 2004 est.)
    • GDP per capita: $2,900 (2003 est.)

 

GDP per capita = GDP / population

 

REVIEW:

Do each of the following cause GDP to OVERSTATE the economic well-being of a country or UNDERSTATE it?

1. non-market transactions (Does GDP OVERstate or UNDERstate economic well-being?)

 

not included so, GDP UNDERstates well-being.

2. improved product quality (Does GDP OVERstate or UNDERstate economic well-being?)

 

not accounted for, so GDP UNDERstates well-being.

3. more leisure (Does GDP OVERstate or UNDERstate economic well-being?)

 

not accounted for, so GDP UNDERstates well-being.

4. the composition of output (Does GDP OVERstate or UNDERstate economic well-being?)

 

if "bad" things are being produced, then GDP OVERstates well-being.

5. the distribution of income (Does GDP OVERstate or UNDERstate economic well-being?)

 

an unequal distributin of income would result in GDP OVERstating the well-being of most of a country's population

6. the underground economy (Does GDP OVERstate or UNDERstate economic well-being?)

 

not accounted for, so GDP UNDERstates well-being

7. GDP and the environment (Does GDP OVERstate or UNDERstate economic well-being?)

 

harmful effects of pollution and costs of pollution reduction are not deducted from GDP, so GDP OVERstates well-being.

8. Non-economic sources of well-being (Does GDP OVERstate or UNDERstate economic well-being?)

 

not accounted for, so GDP UNDERstates well-being

9. per-capita income (Does GDP OVERstate or UNDERstate economic well-being?)

 

GDP OVERstates well-being in countries with large populations and UNDERstates well-being in countries with small populations

III. Measuring GDP

A. Introduction -- circular flow model
1. two approaches
a. expenditures approach
b. income approach

  • Arrow # 3 is real GDP. This is output produced by business and sold in the product markets.
  • To measure this we can measure arrow #4 which are the expenditures spent on this output.
  • We can also measure arrow #1 which is the income earned by households when they sell their resources (arrow #2) to businesses.

 

B. Expenditures Approach

GDP = C + I + G + Xn

1. personal consumption expenditures (C)
2. gross private domestic investment (Ig)

a. includes:
1) all final purchases of machinery, equipment, and tools by businesses
2) all construction
3) changes in inventories

b. gross vs. net domestic investment (In)

c. net investment and economic growth

1) expanding economy
2) static economy
3) declining economy

3. government purchases (G)
4. net exports (Xn)

C. Income Approach --calculating national income (NI)

NI = Wages + Rents + Interest + Corp. Profits + Prop. Income

1. circular flow: expenditures = income?

a. depreciation: consumption of fixed capital
b. indirect business taxes

2. resource payments

a. compensation of employees (wages)
b. rent
c. interest
d. profit
1) proprietor's income
2) corporate profits

3. National Income to GDP

NI + IBT + Depreciation (CCA) = GDP

a. indirect business taxes (IBT)
b. depreciation

4. Other Social Accounts

a. net domestic product (NDP)
GDP - Depreciation (CCA) = NDP

b. national income (NI)

NI = Wages + Rents + Interest + Corp. Profits + Prop. Income

c. personal income (PI)

d. disposable income (DI)

 

D: REVIEW:

 

7-8 (Key Question) Below is a list of domestic output and national income figures for a given year. All figures are in billions. The ensuing questions ask you to determine the major national income measures by both the expenditure and income methods. Answers derived by each approach should be the same.

a. Using the above data, determine GDP and NDP by the expenditure method.

b. Calculate National Income (NI) by the income method.

Personal consumption expenditures..............
Net foreign factor income earned
Transfer payments...........................
Rents
Consumption of fixed capital (depreciation).......
Social security contributions
Interest.......
Proprietors’ income
Net exports..........................................
Dividends
(part of corporate profits)
Compensation of employees.............
Indirect business taxes
Undistributed corporate profits
(part of profits)....
Personal taxes
Corporate income taxes
(part of corporate profits)....
Corporate profits
Government purchases........
Net private domestic investment
Personal saving.......

....$245
4
....12
14
....27
20
....13
33
.....11
16
....223
18
....21
26
....19
56
......72
33
.......20

ANSWERS:

a. Using the above data, determine GDP and NDP by the expenditure method.

 

GDP = $388
GDP = C + Igross + G + Xnet
Igross = Inet + depreciation = 33 + 27 = 60
GDP = 245 + 60 + 72 + 11 = 388

NDP = $361
NDP + C + Inet + G + Xnet
NDP = 245 + 33 + 72 + 11 = 361

or

NDP = GDP - depreciation
NDP = 388 - 27 = 361

b. Calculate National Income (NI) by the income method.

NI = $339
NI = wages + rents + interest + profits
profits = corporate profits + proprietor's income
profits = 56 + 33 = 89
NI = 223 + 14 + 13 + 89 = 339

 

 

III. Nominal vs. Real GDP

A. Definitions
1. nominal GDP
  • nominal GDP = SUM P specific year x Q specific year
  • specific year's prices times specific year's quantinties

    Nominal GDP = SUM (this year's prices x this year's quantities) = P this year x Q this year

    Therefore, if nominal GDP increases is it because we are producing more ( Q this year ) or is it because the Price Level increased ( P this year ) ?

    In fact it is possible for nominal GDP to increase even though the quantity produced has DECREASED. How?

    Nom. GDP = P this year x Q this year

     

    Nom. GDP = P this year x Q this year

    So if we know that nominal GDP has increased, we still do not know if we are producing more (and reducing scarcity) or if the price level has just increased.

2. real GDP

  • real GDP = SUM P base year x Q specific year
  • specific year's quantities x base years prices

    Real GDP = SUM (base year's prices x this year's quantities) = P base year x Q this year

    By using the same price level (base year prices) we remove the effects of a higher price level (inflation) and if REAL GDP increases we know that the economy is producing more and scarcity is being reduced..

B. GDP Price Index (GDP deflator)

1. definition
a price index is a measure of the price of a specified collection of goods and services, called a "market basket", in a given year as compared to the price of an identicle (or highly similar) collection of goods and services in a reference year (called the "base year")

2. calculating a GDP price index

price index in a given year = (price of mkt basket inspecific year / price of same mkt basket in base year) x 100

3. calculating real GDP

 

 

REVIEW

The following data show nominal GDP and the appropriate price index for several years.

Compute real GDP for each year. In which year(s) was there a recession (decline in real GDP)?. All GDP are in billions.

                                   Nominal           Price level                                                  

                Year               GDP                  index                Real GDP

                   1                  $117                    120                       ___                       

                   2                    124                    104                       ___                       

                   3                    143                      85                       ___                       

                   4                    149                      96                       ___                       

                   5                    178                    112                       ___                       

                   6                    220                    143                       ___                       


The answers are below:

 

 

 

 

 

 

 

ANSWERS:

                                   Nominal           Price level                                                  

                Year               GDP                  index                Real GDP

                   1                  $117                    120                      $ 98                       

                   2                    124                    104                       119                       

                   3                    143                      85                       168                       

                   4                    149                      96                       155                       

                   5                    178                    112                       159                       

                   6                    220                    143                       154