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OLIGOPOLY, CONCENTRATION: Oligopoly is a market structure that contains a small number of relatively large firms, meaning oligopoly markets tend to be concentrated. A small number of large firms account for a majority of total output. Concentration unto itself is not necessarily bad, but it often leads to inefficient behavior, such as collusion and nonprice competition. Concentration is measured in three ways--market share, concentration ratio, Herfindahl index.
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COMMODITY MONEY A medium of exchange (money) that has both value in use and value in exchange. Commodity money is first and foremost a commodity that provides users with satisfaction of their wants and needs. However, it also has the secondary function of acting as a medium of exchange for the economy. In the march toward economic complexity, commodity money emerged from barter exchanges, but then ultimately gave way to modern fiat money.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time calling an endless list of 800 numbers looking to buy either a box of multi-colored, plastic paper clips or several orange mixing bowls. Be on the lookout for the last item on a shelf.
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This isn't me! What am I?
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Okun's Law posits that the unemployment rate increases by 1% for every 2% gap between real GDP and full-employment real GDP.
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"I was always looking outside myself for strength and confidence, but it comes from within. It is there all the time. " -- Anna Freud, psychologist
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CRS
Constant Returns to Scale
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