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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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CETERIS PARIBUS

A Latin term meaning that other factors remain unchanged. Ceteris paribus is commonly used as an assumption when conducting a wide variety of economic analyses. By holding everything else constant, the ceteris paribus assumption makes it possible to identify the cause-and-effect relation between two factors. Relaxing the ceteris paribus assumption is the primary analytical technique used in the comparative statics study of economics.

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BEIGE MUNDORTLE
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Today, you are likely to spend a great deal of time browsing about a thrift store seeking to buy either a birthday greeting card for your father or a T-shirt commemorating the first day of spring. Be on the lookout for high interest rates.
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The portrait on the quarter is a more accurate likeness of George Washington than that on the dollar bill.
"Education is the ability to listen to almost anything without losing your temper or your self-confidence. "

-- Robert Frost

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