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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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PROPRIETORS' INCOME

The official factor payment item in the National Income and Product Accounts maintained by the Bureau of Economics Analysis measuring the combined payments for all four factors of production used in owner-operated business firms. Specifically, proprietors' income is the excess of revenue over explicit production cost of owner-operated businesses and includes payments for labor, capital, land, and entrepreneurship. This is one of five official factor payments making up national income. The other four are compensation of employees, rental income of persons, net interest, and corporate profits. Proprietors' income is usually less than 10 percent of national income, typically in the 7 to 10 percent range.

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Today, you are likely to spend a great deal of time watching the shopping channel hoping to buy either a package of 4 by 6 index cards, the ones with lines or a 50 foot extension cord. Be on the lookout for letters from the Internal Revenue Service.
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The standard "debt" notation I.O.U. does not mean "I owe you," but actually stands for "I owe unto..."
"When one door closes another door opens; but we do often look so long and so regretfully upon the closed door, that we do not see the ones which open for us. "

-- Alexander Graham Bell, inventor

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