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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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ADVERSE SELECTION An inefficient, bad, or adverse outcome of a market exchange that results because buyers and/or sellers make decisions based on asymmetric information. This commonly results in a market that exchanges a lesser quality good, what is termed the market for lemons. Two related problems resulting from asymmetric information are moral hazard and the principal-agent problem. Two methods of lessoning the problem of adverse selection are signalling and screening.
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BLUE PLACIDOLA [What's This?]
Today, you are likely to spend a great deal of time searching for rummage sales hoping to buy either a coffee cup commemorating the moon landing or a how-to book on surfing the Internet. Be on the lookout for pencil sharpeners with an attitude. Your Complete Scope
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Natural gas has no odor. The smell is added artificially so that leaks can be detected.
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"Far and away the best prize that life has to offer is the chance to work hard at work worth doing." -- Theodore Roosevelt, 26th US president
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WLLN Weak Law of Large Numbers
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