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ELASTICITY: The relative response of one variable to changes in another variable. The phrase "relative response" is best interpreted as the percentage change. For example, the price elasticity of demand, one of the more important applications of this concept in economics, is the percentage change in quantity demanded measured against the percentage change in price. Other notable economic elasticities are the price elasticity of supply, income elasticity of demand, and cross elasticity of demand.
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SIGNALLING When confronted by asymmetric information, the use of small bits of information, or indicators, that suggest more comprehensive information. Signalling is used by those with more information to reduce the cost of informing those with less information. It is commonly used in markets with adverse selection. Methods of signalling include advertising, brand names, and warranties. A related method is screening.
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GRAY SKITTERY
[What's This?]
Today, you are likely to spend a great deal of time surfing the Internet wanting to buy either a wall poster commemorating the first day of spring or a lazy Susan for you dining room table. Be on the lookout for gnomes hiding in cypress trees.
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The first paper notes printed in the United States were in denominations of 1 cent, 5 cents, 25 cents, and 50 cents.
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"To sit back and let fate play its hand out, and never influence it, is not the way man was meant to operate." -- John Glenn, astronaut, U.S. senator
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WPI
Wholesale Price Index
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