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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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PERFECT COMPETITION, EFFICIENCY Perfect competition is an idealized market structure that achieves an efficient allocation of resources. This efficiency is achieved because the profit-maximizing quantity of output produced by a perfectly competitive firm results in the equality between price and marginal cost. In the short run, this involves the equality between price and short-run marginal cost. In the long run, this is seen with the equality between price and long-run marginal cost at the minimum efficient scale of production.
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WHITE GULLIBON
[What's This?]
Today, you are likely to spend a great deal of time wandering around the shopping mall hoping to buy either a Boston Red Sox baseball cap or a square lamp shade with frills along the bottom. Be on the lookout for gnomes hiding in cypress trees.
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This isn't me! What am I?
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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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"Just as iron rusts from disuse, even so does inaction spoil the intellect. " -- Leonardo da Vinci, architect, artist
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GDI
Gross Domestic Income
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