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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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ELASTICITY AND DEMAND SLOPE The slope of a straight-line demand curve, one with a constant slope, has constantly changing elasticity. It includes all five elasticity alternatives--perfectly elastic, relatively elastic, unit elastic, relatively inelastic, and perfectly inelastic. No two points on a straight-line demand curve have the same elasticity.
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BLUE PLACIDOLA
[What's This?]
Today, you are likely to spend a great deal of time searching the newspaper want ads seeking to buy either clothing for your kitty cats or a set of luggage without wheels. Be on the lookout for strangers with large satchels of used undergarments.
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The penny is the only coin minted by the U.S. government in which the "face" on the head looks to the right. All others face left.
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"You can't build a reputation on what you are going to do." -- Henry Ford, automaker
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NORC
National Opinion Research Center
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