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AGGREGATE EXPENDITURE DETERMINANT: A ceteris paribus factor that affects aggregate expenditures, but which is assumed constant when the aggregate expenditure line is constructed. Changes in any of the aggregate expenditures determinants cause the aggregate expenditure line to shift. While a wide variety of specific ceteris paribus factors can cause the aggregate expenditure line to shift, it's usually most convenient to group them into the four, broad expenditure categories -- consumption, investment, government purchases, and net exports. The reason is that changes in these expenditures are the direct cause of shifts in the aggregate expenditure line. If any determinant affects aggregate expenditures it MUST affect one of these four expenditures.

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Lesson 10: Gross Domestic Product | Unit 2: Looking Behind GDP Page: 11 of 25

Topic: GDP <=PAGE BACK | PAGE NEXT=>

Economic production that involves market transactions is the foundation of GDP. This is area E. It is combined with area B to measure GDP.

A summary of measuring GDP:

  • Start with all market transactions of record.
  • Toss out past and future production in Slice A.
  • Add the estimated value of nonmarket 'in-kind' production in Slice B.
  • Don't include the value of nonmarket production in chunk C and the value of illegal production in chunk D.
  • Combine areas B and E for the final tabulation of GDP.

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UNIT ELASTIC

An elasticity alternative in which changes in one variable (usually price) cause equal proportional changes in another variable (usually quantity). In other words, any change in price, whether big or small, triggers exactly the same percentage change in quantity. Quantity changes match price changes. This characterization of elasticity is most important for the price elasticity of demand and the price elasticity of supply. Unit elastic is one of five elasticity alternatives. The other four are perfectly elastic, perfectly inelastic, relatively elastic, and relatively inelastic.

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Today, you are likely to spend a great deal of time strolling through a department store wanting to buy either a lazy Susan for you dining room table or a set of serrated steak knives, with durable plastic handles. Be on the lookout for pencil sharpeners with an attitude.
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Two and a half gallons of oil are needed to produce one automobile tire.
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