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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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CAPITAL DEPRECIATION

The wearing out, breaking down, or technological obsolescence of physical capital that results from use in the production of goods and services. To paraphrase an old saying, "You can't make a car without breaking a few socket wrenches." In other words, when capital is used over and over again to produce goods and services, it wears down from such use.

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Today, you are likely to spend a great deal of time going from convenience store to convenience store seeking to buy either blue cotton balls or a genuine down-filled pillow. Be on the lookout for deranged pelicans.
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In the early 1900s around 300 automobile companies operated in the United States.
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