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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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MARGINAL REVENUE, MONOPOLY The change in total revenue resulting from a change in the quantity of output sold. Marginal revenue indicates how much extra revenue a monopoly receives for selling an extra unit of output. It is found by dividing the change in total revenue by the change in the quantity of output. Marginal revenue is the slope of the total revenue curve and is one of two revenue concepts derived from total revenue. The other is average revenue. To maximize profit, a monopoly equates marginal revenue and marginal cost.
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GREEN LOGIGUIN
[What's This?]
Today, you are likely to spend a great deal of time searching the newspaper want ads trying to buy either a three-hole paper punch or decorative picture frames. Be on the lookout for poorly written technical manuals.
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Three-forths of the gold mined each year is used to manufacture jewelry.
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"A stumble may prevent a fall. " -- Margaret Thatcher, British prime minister
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SLLN
Strong Law of Large Numbers
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