Presentation on theme: "Instructor Sandeep Basnyat"— Presentation transcript:
1Instructor Sandeep Basnyat Sandeep_basnyat@yahoo.com 9841 892281 Macroeconomics & The global Economy Ace Institute of Management Session 1InstructorSandeep Basnyat
2ObjectivesTo acquaint students with basic knowledge of macroeconomic theoriesDefine, explain and analyze macroeconomic terms, theories and indicators in generalApply learning in decision making processes and solve real world issuesUse and explain the macroeconomic and developmental problems in a country
3Evaluation Criteria Class Participation 5% Group Presentation 10% (5 Groups)Midterm exams 15%Term exam 40% (End Term)Class Tests 10% (2 Tests)Assignments 10% (1 Assignment)Group Term Paper 10% (Submit at end)
4Case study presentations Case study oriented classesPossibility of external evaluatorEvaluation Criteria: (10 x 3 = 30 marks)Did the presentation reflect a team work among its members?Were the students prepared for the presentation?Did the students look confident while deliberating? (including eye contact & voice clarity)
5Case study presentations Case Study Presentation ScheduleGroup1 Session 3Group2 Session 5Group 3 Session 6Group 4 Session 9Group 5 Session 10
6Class tests, Assignment & Term paper Class Test 1: Session 4Class Test 2: Session 11Assignment: Session 9Term Paper:Preliminary Selection of Topic for term paper Session 3Development of Research idea on term paper Session 5Submission and Approval of the Topic with plan Session 7Submission of term paper Session 12
7What you studied in Microeconomics.. Basic demand and supply functions of individuals and marketsProfit maximizations of individual firms in different marketsConsumers and Producers welfare theoriesCost and benefits of firms in different markets.And so on…But NOW ….
8Introduction to Macroeconomics Macroeconomics, the study of the economy as a whole, addresses many topical issues:Why does the cost of living keep rising?Why are millions of people unemployed, even when the economy is booming?What causes recessions? Can the government do anything to combat recessions? Should it?
9Introduction to Macroeconomics Macroeconomics, the study of the economy as a whole, addresses many topical issues:What is the government budget deficit? How does it affect the economy?Why does Nepal have such a huge trade deficit?Why are so many countries poor? What policies might help them grow out of poverty?And our analysis look...
10U.S. Real GDP per capita (2000 dollars) 9/11/2001First oil price shocklong-run upward trend…Second oil price shockGreat DepressionWorld War II
13Why learn macroeconomics? 1. The macroeconomy affects society’s well-being.Each one-point increase in the unemployment rate is associated with:920 more suicides650 more homicides4000 more people admitted to state mental institutions3300 more people sent to state prisons37,000 more deathsincreases in domestic violence and homelessness
14Why learn macroeconomics? 2. The macroeconomy affects your well-being.change from 12 mos earlierpercent change from 12 mos earlierIn most years, wage growth falls when unemployment is rising.
15Introduction to Macroeconomics Deals with the economy as a whole.Study of the economy as a whole.Its goal is to explain the economic changes that affect many households, firms, and markets at once.
16How do Macroeconomists think? Theory as a Model:Used to describe the real world eliminating unnecessary detailsDon’t forget to floss!The model teethA road mapA model of human anatomy
17How do Macroeconomists think? Macroeconomic models : Symbols and EquationsTwo important variables in a models:Exogenous variables; andEndogenous variables.Exogenous (Independent) variables : that a model takes as given.Endogenous (dependent) variables : which the model tries to explain. (What happens to..??)
18The model of supply and demand Assume the following two relationships for CD market:Qd = D(P,Y) …………………(i)Qs = S(P,Pm) …………………(ii)Equation (i): shows that Quantity of the CD demanded is the function of the Price of the CD and Income level of the consumer or the aggregate income of the economy.Equation (ii): shows that Quantity of the CD supplied is the function of the Price of the CD and Input price of the materials.The equilibrium in the CD market is given by:Qd = Qs
19The model of supply and demand PriceDemand, QdQ*PSupply, QsQuantity
20The model of supply and demand Exogenous Variables:Aggregate Income, andPrice of the materials(taken as given)Endogenous Variables:Price of the CD, andEquilibrium quantity of CDPriceDemandQ*PSupplyQuantityThe model explains what happens to Endogenous variables (Price and Equilibrium Quantity of CD sold) when one of the Exogenous variables (Aggregate Income and Price of the materials ) changes.
21Example: changes in Exogenous variables DSQD'SHIFTS IN DEMANDSHIFTS IN SUPPLYPDSQS'
22Prices: flexible vs. sticky General Assumption: Market equilibrium of supply and demand, (market clearing process).Markets clearing continuously, is unrealistic.Need prices to adjust instantly to changes in supply and demand. But, prices and wages often adjust slowly.Although market clearing models assume that wages and prices are flexible, in actuality, some wages and prices are sticky. But they do depict the equilibrium toward which the economy gravitates.Short term analysis vs Long term analysis for Price Sticky vs Price Flexibility
23Gdp, cpi and unemployment Three statistics that economists and policymakers use:Gross Domestic Product (GDP) is the dollar value of all final goods and services produced within an economy in a given period of time.The consumer price index (CPI) measures the level of prices.The unemployment rate tells us the fraction of workers who are unemployed.
24Gross Domestic Product (GDP) Two waysof viewing GDPTotal income of everyone in the economyTotal expenditure on the economy’soutput of goods and servicesHouseholdsFirmsIncome $LaborGoods/ ServicesExpenditure $For the economy as a whole, income must equal expenditure.GDP measures the flow of dollars in the economy.
25Expenditure Rules for Computing GDP In general, to compute the total value of different goods and services, the national income accounts use market prices. Thus, if$0.50$1.00GDP = (Price of apples Quantity of apples)+ (Price of oranges Quantity of oranges)= ($0.50 4) + ($1.00 3)GDP = $5.00
26GDP: Components of Expenditure Y = C + I + G + NXNet exportsor net foreigndemandInvestmentspending bybusinesses andhouseholdsTotal demandfor domesticoutput (GDP)Governmentpurchases of goodsand servicesConsumptionspending byhouseholdsThis is the called the national income accounts identity.
27Calculating GDP Components of U.S. GDP, 2004: The Expenditure Approach BILLIONS OF DOLLARSPERCENTAGE OF GDPPersonal consumption expenditures (C)8,214.370.0Durable goods987.88.4Nondurable goods2,368.320.2Services4,858.241.4Gross private domestic investment (l)1,928.116.4Nonresidential1,198.810.2Residential673.85.7Change in business inventories55.40.5Government consumption and gross investment (G)2,215.918.9Federal827.67.1State and local1,388.311.8Net exports (EX – IM)-624.0- 5.3Exports (EX)1,173.810.0Imports (IM)1,797.815.3Gross domestic product (GDP)11,734.3100.0Note: Numbers may not add exactly because of rounding. Source: U.S. Department of Commerce, Bureau of Economic Analysis.
29World Top 10 GDP in Millions of US Dollars in Market Price (Source: IMF2008/2009)12. India - 1,235, Nepal - 12, Maldives- 1,357162. Bhutan - 1, Kiribati - 130
30Expenditure Rules for Computing GDP 1) Used goods are not included in the calculation of GDP.2) The treatment of inventories depends on if the goods are stored or if they spoil.If the goods are stored, their value is included in GDP.If they spoil, GDP remains unchanged.When the goods are finally sold out of inventory, they are considered used goods (and are not counted).
31Expenditure Rules for Computing GDP 3) Some goods are not sold in the marketplace and therefore don’t have market prices. We must use their imputed value as an estimate of their value. For example, home ownership and government services.4) Intermediate goods are not counted in GDP– only the value of final goods.Reason: the value of intermediate goods is already included in the market price.Value added of a firm equals the value of the firm’s output less the value of the intermediate goods the firm purchases.
32Measuring GDP by the Value Added Method FIRMVALUE OF PRODUCTVALUE ADDEDCotton FarmerValue of raw cotton = $1.00Value added by cotton farmer= $1.00Textile MillValue of raw cotton woven into cotton fabric = $3.00Value added by cotton textile mill = ($3.00 – $1.00)= $2.00Value added by shirt manufacturer = ($15.00 –$3.00)= $12.00Shirt CompanyValue of cotton fabric made into a shirt = $15.00L.L. BeanValue of shirt for sale on L.L. Bean’s Web site = $35.00Value added by L.L. Bean = ($35.00 – $15.00)= $20.00Total Value Added= $35.00
33Compute & compare value added at each stage of production and GDP Exercise: (Problem 2, p. 40)A farmer grows a bushel of wheat and sells it to a miller for $1.00.The miller turns the wheat into flour and sells it to a baker for $3.00.The baker uses the flour to make a loaf of bread and sells it to an engineer for $6.00.The engineer eats the bread.Compute & compare value added at each stage of production and GDP
34Other Exclusions from Expenditures Expenditure on purchase of goods and services during specified time period.Previous expenditure reflects the change in ownership only.Avoid “neither good nor a service”Does not reflect production such as bonds/ stocksAvoid expenditure by governments for which it does not receive a good or service in returnEg.: Transfer payments such as Social security,, unemployment compensation etc.
35Measuring GDP from Income side Sum of income of all factors of production gives the GDP from income sideGDP = Rent + Wages + Interest + Profits
36Calculating GDPU.S. National Income, 1980 (Shapiro: Table 2-1, Pg.27; Adjusted)BILLIONS OF DOLLARSGross Domestic Products (GDP)2341.3Compensation of employees1804.4Proprietors’ income130.6Corporate profits183.8Net interest190.6Rental incomeTransfer payments to households if any.31.9
37Calculating GDPCompensation of employees includes wages, salaries, and various supplements—employer contributions to social insurance and pension funds, for example—paid to households by firms and by the government.Proprietors’ income The income of non-corporate businesses such as small farms, shops.Rental income The income received by property owners in the form of rent.Corporate profits The income of corporate businesses.Net interest The interest received by the businesses minus interest they pay plus interests earned from the foreigners.
38Remember: Gross Domestic Product (GDP) Gross domestic product (GDP) is a measure of the income and expenditures of an economy which includes all items produced in the economy and sold legally in markets.But:It excludes items produced and sold illicitly, such as illegal drugs.
39Other Measures of income Gross National Product (GNP)Net National Product (NNP)National Income (NI)Personal Income (PI)Personal Disposable Income (DI)
40National Income Accounting contd.. GDP + NFI from Abroad = GNPGNP is the monetary value of final goods and services produced by the nationals (income earned by the nationals on foreign countries minus income earned by foreigners at home)GNP – Depreciation (Capital Consumption) = NNPDepreciation is the net capital consumption during the accounting yearNNP – Indirect Business Tax = NI (National Income)Note for the students: Indirect business taxes is the official term used i for sales taxes. They are termed INDIRECT sales taxes because the business sector acts as the "collection agency" for the government, collecting the taxes from the household sector. The taxes are paid INDIRECTLY by the household sector. The household sector is considered the ultimate payer of the taxes. Other taxes paid by the business sectors are considered as Direct Business Taxes such as corporate profits taxes, property taxes, and franchise taxes.A VAT is a consumption Tax but is like a sales tax in that ultimately only the end consumer is taxed. It differs from the sales tax in that, with the latter, the tax is collected and remitted to the government only once, at the point of purchase by the end consumer. With the VAT, collections, remittances to the government, and credits for taxes already paid occur each time a business in the supply chain purchases products from another business.
41National Income Accounting contd.. NI – Social contributions – net interests paid by individuals – corporate profit tax –undistributed corporate profit + Dividends + Govt. & business transfers to individuals + Net interest paid to individual = PI (Personal Income)PI – Personal tax and non-tax payments (such as parking tickets) = DI (Disposable Income)Disposable income is the final income that a consumer spends on the purchase of goods and servicesDI – Saving – Personal Interest Payment – Household Transfer Payment = Personal Consumption Expenditure
42Calculating other measures of Income GDP, GNP, NNP and National Income, 1980 (adjusted from Income Method)DOLLARS (BILLIONS)GDP at factor cost2341.3Plus: Receipts of factor income from the rest of the worldLess: Payments of factor income to the rest of the worldEquals: GNP at factor cost2628.8Less: Depreciation or capital consumptionEquals: Net national product (NNP)Less: Statistical discrepancyEquals: National income (NI) at factor cost2121.4
43Calculating other measures of Income National Income, Personal Income, Disposable Personal Income, and Personal Saving, 1980 (adjusted)DOLLARS (BILLIONS)National income10,275.9Less corporate taxes Plus transfer payments39.6Equals: Personal income2161.0Less: Personal income taxes338.7Equals: Disposable personal income1822.2Less: Personal saving103.6Less: Personal interest payments46.5Less: Transfer payments made by households1.1Equals: Personal Consumption Expenditure1671.1
44Real vs. nominal GDPGDP is the value of all final goods and services produced.Nominal GDP measures these values using current prices.Real GDP measure these values using the prices of a base year.
45Practice problem, part 1 Compute nominal GDP in each year. 200620072008PQgood A$30900$311,000$361,050good B$100192$102200205Compute nominal GDP in each year.Compute real GDP in each year using 2006 as the base year.
46Answers to practice problem, part 1 nominal GDP multiply Ps & Qs from same year 2006: $46,200 = $30 $100 : $51, : $58,300real GDP multiply each year’s Qs by 2006 Ps 2006: $46, : $50, : $52,000 = $30 $100 205
47Real GDP controls for inflation Changes in nominal GDP can be due to:changes in prices.changes in quantities of output produced.Changes in real GDP can only be due to changes in quantities,because real GDP is constructed using constant base-year prices.Note for students: Suppose from 2006 to 2007, nominal GDP rises by 10%. Some of this growth could be due to price increases, because an increase in the price of output causes an increase in the value of output, even if the real quantity remains the same.Hence, to control for inflation, we use real GDP. Remember, real GDP is the value of output using constant base-year prices. If real GDP grows by 6% from 2006 to 2007, we can be sure that all of this growth is due to an increase in the economy’s actual production of goods and services, because the same prices are used to construct real GDP in 2006 and 2007.
48U.S. Nominal and Real GDP, 1950–2006 Real GDP (in 2000 dollars)Source:Notice that the brown line (nominal GDP) is steeper than the blue line. That’s because prices generally rise over time. So, nominal GDP grows at a faster rate than real GDP.What is the significance of the two lines crossing in 2000?Answer: is the base year for this real GDP data, so RGDP = NGDP in 2000 only.Before 2000, RGDP > NGDP (Possibly due to declining price level) while after 2000, RGDP < NGDP.Nominal GDP
49GDP DeflatorThe inflation rate is the percentage increase in the overall level of prices.One measure of the price level is the GDP deflator, defined asThe GDP deflator is so named because it is used to “deflate” (remove the effects of inflation from) GDP and other economic variables.
50Practice problem, part 2Nom. GDPReal GDPGDP deflatorInflation rate2006$46,200n.a.200751,40050,000200858,30052,000Use your previous answers to compute the GDP deflator in each year.Use GDP deflator to compute the inflation rate from 2006 to 2007, and from 2007 to 2008.
51Answers to practice problem, part 2 Nominal GDPReal GDPGDP deflatorInflation rate2006$46,200100.0n.a.200751,40050,000102.82.8%200858,30052,000112.19.3%
52Chain-Weighted Real GDP Over time, relative prices change, so the base year should be updated periodically.In essence, chain-weighted real GDP updates the base year every year, so it is more accurate than constant-price GDP.But we usually use constant-price real GDP, because:the two measures are highly correlated.constant-price real GDP is easier to compute.
53Exercise 1: For your understanding Make a note of:Real and Nominal GDPs of some of the important countries and comparePrepare a list of top 10 countries with their Real GDP growth rate and PPP growth rate.
54Consumer Price Index (CPI) A measure of the overall level of pricesUses:tracks changes in the typical household’s cost of livingAdjusts for inflationallows comparisons of dollar amounts over time
55How to compute CPI1. Survey consumers to determine composition of the typical consumer’s “basket” of goods.2. Every month, collect data on prices of all items in the basket; compute cost of basket3. CPI in any month equals
56Exercise: Compute the CPI Basket contains 20 pizzas and 10 compact discs.prices:pizza CDs2002 $10 $152003 $11 $152004 $12 $162005 $13 $15For each year, computethe cost of the basket in each yearthe CPI (use 2002 as the base year)the inflation rate from the preceding year
57Cost of Inflation basket CPI rate 2002 $350 100.0 n.a. Answers:Cost of Inflationbasket CPI rate2002 $ n.a.%%%
59Reasons why the CPI may overstate inflation Substitution bias: The CPI uses fixed weights, so it cannot reflect consumers’ ability to substitute toward goods whose relative prices have fallen.Introduction of new goods: The introduction of new goods makes consumers better off and, in effect, increases the real value of the dollar. But it does not reduce the CPI, because the CPI uses fixed weights.Unmeasured changes in quality: Quality improvements increase the value of the dollar, but are often not fully measured.
60CPI vs. GDP Deflator prices of capital goods included in GDP deflator (if produced domestically)excluded from CPIprices of imported consumer goodsincluded in CPIexcluded from GDP deflatorthe basket of goodsCPI: fixedGDP deflator: changes every year
61Categories of the population employed working at a paid jobunemployed not employed but looking for a joblabor force the amount of labor available for producing goods and services; all employed plus unemployed personsnot in the labor force not employed, not looking for work
62Two important labor force concepts unemployment rate percentage of the labor force that is unemployedlabor force participation rate the fraction of the adult population that “participates” in the labor force
63Exercise 1: For your understanding Make a note of:Real and Nominal GDPs of some of the important countries and comparePrepare a list of top 10 countries with their Real GDP growth rate and PPP growth rate.Find CPI Index of various some important countries and check the inflation rates.
64Numerical Example 1 Calculate GDP, GNP, NI and DI Employee compensation (EC) 3,244Rental income (RI) 16Net interest (NETI)Capital consumption (CC) 567Corporate taxes (CT) 145Social Security taxes (SST) 440Personal taxes (PT)Undistributed corporate profits (UCP) 37Corporate profits (CP) 297Proprietor's income (PROI) 402Indirect business taxes (IBT) 470Transfer payments (TP) 660Population (POP) (billions of people)
65Solution to Numerical Example 1 GDP = Employee compensation + Rental income + Net interest + Corporate profits + Proprietor's income = Billion $4426GNP = GDP + NIF = = Billion $4426NI = NNP – Indirect Business Taxes= GNP – Capital Consumption - Indirect Business Taxes= Billion $3389DI = PI – Personal tax and non-tax payments= NI – Social contributions– corporate profit tax –undistributed corporate profit + Govt. & business transfers to individuals – Personal tax and non-tax payments= Billion $ 2727For Further practice:Macroeconomics by N. G. Mankiw, 6th edition. Q.N. 2, 5, 6 and 7.
66Numerical Questions and Solutions for Practice 1) Abby consumes only apples. In year 1, red apples cost 1$ each, green apples cost 2$ each, and Abby buys 10 red apples. In year 2, red apples cost 2$ each, green apples cost 1$ each, and Abby buys 10 green apples. Compute a consumer Price index (CPI) for apples for each year. Assume that year 1 is the base year in which the consumer basket isfixed. (Mankiw. Pg. 41. Q. 7)a.
67-------------------------------------- Price in Base Year Solution for Q. 1Price in Current YearCPI in Year 1 =Price in Base Year(PRed1 x QRed1) + (PGreen1 x QGreen1)=1(PRed1 x QRed1) + (PGreen1 x QGreen1)Price in Current YearCPI in Year 2 =Price in Base Year(PRed2 x QRed1) + (PGreen2 x QGreen1)=2(PRed1 x QRed1) + (PGreen1 x QGreen1)
68Calculate the implicit GDP deflator for 1998 and 1999 Numerical Questions and Solutions for Practice2) Suppose that the Nominal and Real GDP for country Z in 1998 were $8,798.1 (in billion) and $8,536, respectively. While for 1999, the figures were $9,295.4 and $8,897.7.Calculate the implicit GDP deflator for 1998 and 1999Calculate the Inflation rate (Calculated as the ratio of differences in GDP Deflator with the GDP in base Year).(Related to Mankiw. Pg. 41. Q. 6)
69---------------------------- = ------------------- = 1.0307 RGDP 1998 Solutions for Q.2: hintNGDP 19988798.1Deflator in Year 1998 ===1.0307RGDP 19988536.0NGDP 19999295.4Deflator in Year 1999 ===1.0447RGDP 19998897.7Now Calculate Inflations rate yourself