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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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ASSUMPTIONS, KEYNESIAN ECONOMICS The macroeconomic study of Keynesian economics relies on three key assumptions--rigid prices, effective demand, and savings-investment determinants. First, rigid or inflexible prices prevent some markets from achieving equilibrium in the short run. Second, effective demand means that consumption expenditures are based on actual income, not full employment or equilibrium income. Lastly, important savings and investment determinants include income, expectations, and other influences beyond the interest rate. These three assumptions imply that the economy can achieve a short-run equilibrium at less than full-employment production.
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PURPLE SMARPHIN
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Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club wanting to buy either clothing for your pet dog or an ink cartridge for your printer. Be on the lookout for mail order catalogs with hidden messages.
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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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CEEC
Council for European Economic Cooperation
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