EC140 Lecture Notes - Lecture 20: Environmental Quality, Gdp Deflator, Counting Measure
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Gdp is total production in a country. If all production was sold and consumed, gdp would be easy to measure. Outputs of one company are inputs to another. Measuring value of output counts some output more than once. Measuring gdp is about measuring final production. To avoid double counting measure value added by all firms. Value added = sales revenue - cost of intermediate goods. Value added = wages paid to workers + profits paid to owners. Total value added is a measure of total output. Gdp is the total value of final goods and services produced. Equals the value of expenditure on output. Also equals the income generated by producing that output. Production, expenditure, and income are all equal by definition. Consumption expenditure: goods and services sold to final users. Investment expenditure: goods not for current consumption, inventory, plant/equipment, housing. Government purchases: current expenditure, government investment. Net exports: total exports minus total imports, count goods and services.