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Macro (EC102)_ GDP 1

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by: Linda Perks

Macro (EC102)_ GDP 1 EC102

Marketplace > Boston University > Economcs > EC102 > Macro EC102 _ GDP 1
Linda Perks

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These notes cover lecture 1, gross domestic products part 1.
Study Guide
Macroeconomics, Economics, Gross Domestic Product, GDP
50 ?




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This 4 page Study Guide was uploaded by Linda Perks on Wednesday February 24, 2016. The Study Guide belongs to EC102 at Boston University taught by Watson in Spring 2016. Since its upload, it has received 115 views. For similar materials see Macroeconomics in Economcs at Boston University.

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Date Created: 02/24/16
Zara Mahmood September 5, 13 EC102 Lecture 1: Gross Domestic Product (GDP) About all firms and how all firms interact with all firms  All consumers, all firms, all markets Characteristics of Macroeconomics  The time frame o Long run vs. short run  Long run – economic growth  Short run  Business cycle fluctuations (ups/downs of economy)  Aggregate demand  Demand management – government tries to boost/stunt economy during hard/good times o Monetary policies – money related (loans) o Fiscal policies – deficit  Expectations o Making decisions based on what will happen in the future as well as the present  Greater complexity o More complex math  Highly empirical o Emphasis on data  Policy driven o Solving problems in economy through policy Gross Domestic Product (GDP)  GDP is the market value of all final goods and services producedwithin a countryin a year o Sum of everything produced/bought/sold in goods and services o Taken for dollar value not quantities Market Value – Need some sort of market transaction to count in GDP  Not quantity but values  Eg: stay at home parent taking care (not market)  Parent taking child to day care (market) Final – Good/service may go through many stages or steps before it is considered its “final”  Final price embodies each intermediate stage of production and its value. Use it to add in GDP  Final good/service – a good or service purchased by a final user  Intermediate good/service – A good or service that is an input into another good or service o Tire for a truck Zara Mahmood September 5, 13 EC102 o GDP counts value of truck but not of tire so as not to double count tire value Annual Production–Has to have been produces, cannot be the transaction of something already created  Service can count as a product (arranging the sale of an already produced land)  Used goods don’t count* (buying used house) o Selling used items on Amazon Within Country – Must have been produced within the borders of the country  Overseas companies contribute to GDP of country they are in, not ownership country o Japanese automobile companies in America count as US GDP Measuring GDP  National Income Accounting – calculated by the Bureau of Economic Analysis (division of the Department of Commerce) o Resulting product  “NIPA” National Income and Product Accounts Components of GDP GDP is divided into four major categories of expenditure  Consumption  spending by households on goods on services, not including spending on new houses o Durable/nondurable goods and services (med care)  Investment  Spending by firms on new factories, office buildings, machinery, and additions to inventory, plus spending by households and firms on new houses o Business fixed, residential investment, and changes in business inventories  Government purchases  Spending by federal, state, and local governments on goods and services o Transfer payments are not included (pension)  Net exports exports minus imports o Exports – goods produced locally and sold abroad o Imports are greater than exports so net exports are negative The Expenditure Method  Calculates GDP by adding up the value of expenditures on all final goods and services in the economy o Who does the consuming? o Add exports of goods and services  Produced in country should go towards GDP o Subtract imports of goods and services  Should not count towards GDP An Important Identity Zara Mahmood September 5, 13 EC102  Y = C + I + G + NX o Y – GDP o C – Consumption  Durable and nondurable goods o I – Investment  House (current year), inventory, machinery (firms)  Stocks and bonds are not investments (savings) - not in GDP o G – Government purchases  Not transfer payments (to poor) no transaction – not in GDP  Building schools/hospitals/teachers o NX – Net Exports  Value of everything we sell – value of everything we buy Measuring GDP Using the Value-Added Method GDP can also be calculated using the value added method  Value Added – The market value a firm adds to the product o Difference between value paid for a product and value product is sold o Eg: cotton fabric ($15) shirt sold ($35)  value added ($20) Real GDP versus Nominal GDP Increases in GDP over years is not only because of increase in production  Increase in GDP is partly due to increase in production, partly due to increase in price o Need a way to isolate the prices changes from quantity changes Per Capita GDP  Accounts for differing populations in countries o Per Capita GDP – GDP/Population  2012  GDP (15.7 T) Population (314 M)  2012 Per Capita GDP  15.7 T/ 314 M = $50,000  Per capita GDP is average standard of living Potential GDP Potential GDP – The level of real GDP attained when all firms are producing at capacity  Potential GDP is an estimate of what GDP would have been if all factors of production (eg labor and capital) had been used at their “normal” rates o Cannot count it – is an estimate o “normal” – 8 hr day job but some might work only 4 hrs (below potential) o Benchmark of what economy could produce at normal rate Zara Mahmood September 5, 13 EC102 Measure of economy’s capacity to produce Nominal GDP Nominal GDP – The value of final goods and services evaluated at current-year prices  Does not account for inflation whereas real GDP does *Assume there are N goods produced in the economy 2012 Nominal GDP = P 112 112+ P212Q212 + P312 312+…..+ PN12Q N12 = $15.7T Real DP Real GDP – The value of final goods and services evaluated at base-year prices  Real GDP is the value of all goods and services measured at a constant price level o Picks a single year’s price and use it as a base price  Value output of other years using prices of base year  Keeping prices constant  know changes in real GDP are due to changes in quantity of goods and services *Assume year 2005 as base 1 1 2 2 3 3 N N 2012 Real GDP = P 05 12+ P 05Q 12+ P 05Q 12+…..+ P 05Q 12 =$13.6T Notation for the Rest of the Course Y = Real GDP P = Price Level P x Y = Nominal GDP


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