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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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AGGREGATE DEMAND The total real expenditures on final goods and services produced in the domestic economy that buyers are willing and able to undertake at different price levels, during a given time period (usually a year). Aggregate demand, usually abbreviated AD, is an inverse relation between price level and aggregate expenditures. This is one half of the AS-AD (aggregate market) analysis. The other half is aggregate supply. Aggregate demand consists of four aggregate expenditures--consumption expenditures, investment expenditures, government purchases, and net exports--made by the four macroeconomic sectors--household, business, government, and foreign.
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GREEN LOGIGUIN
[What's This?]
Today, you are likely to spend a great deal of time at a crowded estate auction hoping to buy either a hepa filter for your furnace or a wall poster commemorating next Thursday. Be on the lookout for door-to-door salesmen.
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The first U.S. fire insurance company was established by Benjamin Franklin in 1752 in Philadelphia.
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"Whenever an individual or a business decides that success has been attained, progress stops. " -- Thomas Watson Jr., IBM executive
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AS-AD
Aggregate Supply-Aggregate Demand Model
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