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LERNER INDEX: The difference between price (p) and marginal cost (mc) as a fraction of price, that is [p-mc]/p. The Lerner index is usually taken as an indicator of market power because the larger the index, the larger the difference between price and marginal cost, that is, the larger the distance between the price and the competitive price. The Lerner index depends on the elasticity of demand. The Lerner index is also called the price-cost margin.
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DECREASING MARGINAL RETURNS In the short-run production of a firm, an increase in the variable input results in a decrease in the marginal product of the variable input. Decreasing marginal returns typically surface after the first few quantities of a variable input are added to a fixed input. This is one of two types of marginal returns. The other is increasing marginal returns. A related phenomenon is diseconomies of scale associated with long-run production.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time touring the new suburban shopping complex wanting to buy either a replacement remote control for your television or a replacement nozzle for your shower. Be on the lookout for infected paper cuts.
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Before 1933, the U.S. dime was legal as payment only in transactions of $10 or less.
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"No amount of business school training or work experience can teach what is ultimately a matter of personal character. " -- Truett Cathy, Chick-fil-A Inc. founder
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AMEX
American Stock Exchange
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