Measuring the Economy Gross Domestic Product. Gross Domestic Product (GDP) GDP is the market value of all final goods and services produced within a nation.

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Presentation transcript:

Measuring the Economy Gross Domestic Product

Gross Domestic Product (GDP) GDP is the market value of all final goods and services produced within a nation in a year. GDP measures Aggregate Spending, Income and Output. Its measurement creates the basis for forming the appropriate public policy to improve the economy – Gross=totals before adjustments (inflation) – National product=production owned by US companies – Domestic product=production in the US, even if foreign owned GDP is measured in quarters: – Quarter 1 = Jan/Feb/Mar – Quarter 2 = Apr/May/June – Quarter 3 = July/Aug/Sep – Quarter 4 = Oct/Nov/Dec

Aggregate Spending The most common way to measure GDP is the Expenditures Approach GDP = C + I G + G + X N C = Personal Consumption (67% of the economy) purchases of finished goods and services (not houses) I G = Gross Private Business Investment Factory equipment maintenance, new factory equipment, construction of housing, unsold inventory of products built in a year, but not sold that year G = Government Spending government purchases of products and services X N = Net Exports = Exports (X) – Imports (M ) post WWII, Xn has usually been a negative number: trade deficit

Counted or Not Counted? GDP counts all final, domestic production for which there is a market transaction in that year. Used and intermediate goods are not counted in order to avoid double-counting. – For example: a new pair of jeans is counted, but the thread, etc… isn’t Non-market production is not counted (volunteer work) Underground or ‘black market’ activity is not counted. Financial transactions are also not counted such as – Social Security payments – Private transfers of wealth, monetary gift, securities purchases – Secondhand sales, cash transfers

Consumption Consumer spending on – Durable goods (cars, appliances…) – Non-durable goods (food, clothing…) – Services (plumbing, college…) Consumer spending is the largest component of U.S. GDP.

Gross Private Investment Spending in order to increase future output or productivity – Business spending on capital – New construction – Change in unsold inventories It may have been sold next year, but was produced this year, therefore it is measured

Government Spending All levels of government spending on final goods and services and infrastructure count toward GDP. Government transfer payments do not count toward GDP.

Net Exports Exports minus Imports X – M Exports create a flow of money to the United States in exchange for domestic production. Imports create a flow of money away from the United States in exchange for foreign production.

Aggregate Income GDP measures spending and income. Income = r + w + i + p = factor payments r = rent (payment for natural resources) w = wages (payment for labor) i = interest (payment for capital) p = profits (payment for entrepreneurship)

Nominal v. Real GDP Nominal GDP is current GDP measured at current market prices – Nominal GDP may overstate the value of production because of the effects of inflation Real GDP is current GDP measured with a fixed dollar – Real GDP holds the value of the dollar constant and is useful for making year to year comparisons Real GDP is the IMPORTANT ONE!!!

GDP formulas Nominal GDP – C + Ig + G +Xn = Nominal GDP Real GDP – Nominal GDP = Real GDP x 100 Price Index

Changes in GDP GDP is a measure of a nation’s prosperity and economic growth As GDP grows the burden of scarcity is lessened for a society GDP per capita provides a better measure of individual well-being than GDP

The Business Cycle The United States’ GDP is not constant from year to year. Instead, the GDP grows most years and then shrinks in some years. The ups and downs in GDP over time is referred to as the business cycle.

The Business Cycle Illustrated:

Peak – temporary maximum in Real GDP. At this point the unemployment rate (u%) is probably below the natural rate of unemployment, and the inflation rate (π%) is probably increasing. Recession – The contractionary phase of the business cycle. A period of decline in Real GDP accompanied by an increase in u%. To be classified as a recession, the economic decline must be at least 6 months long. Trough – The bottom of the business cycle. The u% is probably high and π% is probably low. Recovery – The phase of the business cycle where the economy is returning to full employment.

The Business Cycle Illustrated: Important note – The various phases of the business cycle last for different amounts of time. – In recent history, expansions have lasted years longer than have recessions. – The Great Depression is the most notable example of a long recession/trough

The Business Cycle Illustrated: Causes – Irregularity of Investment – Changes in productivity – Changes in total spending (aggregate demand) Durable goods manufacturing is most susceptible to the effects of the business cycle Business cycle has become less severe because of technological advancements in supply-chain management and structural changes in U.S. economy.