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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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THREE-SECTOR, THREE-MARKET CIRCULAR FLOW

A circular flow model of the macroeconomy containing three sectors (business, household, and government) and three markets (product, factor, and financial) that illustrates the continuous movement of the payments for goods and services between producers and consumers, with particular emphasis on taxes and government purchases. Other circular models are two-sector, two-market circular flow; two-sector, three-market circular flow; and four-sector, three-market circular flow.

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Today, you are likely to spend a great deal of time at a crowded estate auction wanting to buy either a T-shirt commemorating the 2000 Presidential election or a really, really exciting, action-filled video game. Be on the lookout for door-to-door salesmen.
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A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court!
"Nothing ever built arose to touch the skies unless some man dreamed that it should, some man believed that it could, and some man willed that it must. "

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