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MACROECONOMY: The aggregate, or national economy that is the prime focus of the study of macroeconomics.

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Lesson 12: Business Cycles | Unit 2: A Simple Cycle Page: 7 of 26

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

Contractions generally last about a year, but some have persisted for 1 1/2 years and some end after six months.
  • A contraction, also termed recession, is the decline of real GDP, from A to B.
  • A contraction is officially designated as at least six months of declining economic activity.
  • The 1930s Great Depression had two contractions, one lasting 43 months.
  • A contraction takes the economy from above the long-run trend to below the long-run trend. The long-run trend is full-employment production.
  • Below the long-run trend resources are not fully employed, unemployment increases.

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AVERAGE-MARGINAL RELATION

A mathematical connection between a marginal value and the corresponding average value stating that the change in the average value depends on a comparison between the average and the marginal. This mathematical relation between average and marginal surfaces throughout the study of economics, especially production (average product and marginal product), cost (average total cost and marginal cost), and revenue (average revenue and marginal revenue). A similar relation is that between a total value and the corresponding marginal value.

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Today, you are likely to spend a great deal of time at the confiscated property police auction seeking to buy either a pair of blue silicon oven mitts or a coffee cup commemorating the 2000 Olympics. Be on the lookout for celebrities who speak directly to you through your television.
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The wealthy industrialist, Andrew Carnegie, was once removed from a London tram because he lacked the money needed for the fare.
"Lead the life that will make you kindly and friendly to everyone about you, and you will be surprised what a happy life you will lead."

-- Charles M. Schwab

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