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MARGINAL REVENUE CURVE, PERFECT COMPETITION: A curve that graphically represents the relation between the marginal revenue received by a perfectly competitive firm for selling its output and the quantity of output sold. Because a perfectly competitive firm is a price taker and faces a horizontal demand curve, its marginal revenue curve is also horizontal and coincides with its average revenue (and demand) curve. A perfectly competitive firm maximizes profit by producing the quantity of output found at the intersection of the marginal revenue curve and marginal cost curve.
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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
[What's This?]
Today, you are likely to spend a great deal of time wandering around the downtown area looking to buy either a toaster oven that has convection cooking or a birthday gift for your mother. Be on the lookout for small children selling products door-to-door.
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Two and a half gallons of oil are needed to produce one automobile tire.
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"Nothing will ever be attempted if all possible objections must first be overcome. " -- Samuel Johnson, essayist, critic, lexicographer
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QML
Quasi-Maximum Likelihood
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