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U-SHAPED COST CURVES: The family of short-run cost curves consisting of average total cost, average variable cost, and marginal cost, all of which have U-shapes. They are U-shaped because each has high but falling cost at low quantities of output, which then reaches a minimum, then has rising cost at larger quantities of output. Although the average fixed cost curve is not U-shaped, it's occasionally included with the other three just for sake of completeness.
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MARGINAL PROPENSITY TO INVEST The change in business investment expenditures induced by a change in income or production (national income or gross domestic product). The marginal propensity to invest (abbreviated MPI) is another term for the slope of the investment line and is calculated as the change in investment divided by the change in income or production. The MPI plays a role in Keynesian economics. It augments the slope of the aggregate expenditures line and is part to the multiplier process. A related marginal measure is the marginal propensity to consume.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time flipping through the yellow pages seeking to buy either a T-shirt commemorating next Thursday or a birthday gift for your uncle. Be on the lookout for poorly written technical manuals.
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Potato chips were invented in 1853 by a irritated chef repeatedly seeking to appease the hard to please Cornelius Vanderbilt who demanded french fried potatoes that were thinner and crisper than normal.
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"Always vote for principle, though you may vote alone, and you may cherish the sweetest reflection that your vote is never lost. " -- John Quincy Adams, 6th US president
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PDV
Present Discounted Value
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