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INDUCED EXPENDITURE: An aggregate expenditure (consumption, investment, government purchases, and net exports) that depends on national income or gross domestic product. These four aggregate expenditures are conveniently separated into two types, induced, which is our current topic of expenditures unrelated to national income or GDP, and autonomous expenditures, expenditures which are unrelated to national income or GDP. Induced expenditures are graphically depicted as the slope of the aggregate expenditures line, and depend in large part on the marginal propensity to consume. The induced relation between income and expenditures form the foundation of the multiplier effect triggered by changes in autonomous expenditures.

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Lesson 1: Economic Basics | Unit 1: Economics Page: 3 of 18

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  • The basic definition of economics, which is the scientific study of scarcity and how society uses resources.
  • That economics is also the study of how resources are used to produce goods and services that are used to satisfy consumers' wants and needs.
  • The importance of scarcity, opportunity cost, and analysis to the study of economics.
  • The three questions of allocation, What? How? For Whom?

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DUOPOLY

An oligopoly market structure containing exactly two firms. As an oligopoly, duopoly exhibits the oligopolistic characteristics and undertakes oligopolistic behavior, such as barriers to entry, interdependent actions, and nonprice competition. While duopoly, in its purest form of EXACTLY two firms in the industry, is seldom found in the real world, it does provide an excellent, easy to use illustration of oligopoly. In fact, most instructional analysis of oligopoly generally assumes a two-firm, duopoly market.

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Today, you are likely to spend a great deal of time flipping through the yellow pages trying to buy either a coffee table shaped like the state of Florida or storage boxes for your summer clothes. Be on the lookout for deranged pelicans.
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Helping spur the U.S. industrial revolution, Thomas Edison patented nearly 1300 inventions, 300 of which came out of his Menlo Park "invention factory" during a four-year period.
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Autoregressive Conditional Heteroskedasticity
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