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MARGINAL PROPENSITY TO INVEST: The proportion of each additional dollar of national income that is used for investment expenditures. Or alternatively, this is the change in investment expenditures due to a change in national income. Abbreviated MPI, the marginal propensity to invest is the slope of the investment line used in the analysis of Keynesian economics. As such, it also plays a role in the slope of the aggregate expenditure line and the multiplier effect.
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ECONOMIES OF SCALE Declining long-run average cost that occurs as a firm increases all inputs and expands its scale of production. Economies of scale result from increasing returns to scale and are graphically illustrated by a negatively-sloped long-run average cost curve. Economies of scale usually occur for relatively small levels of production and are then overwhelmed by diseconomies of scale for relatively large production levels. Together, economies of scale and diseconomies of scale create a U-shaped long-run average cost curve.
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BEIGE MUNDORTLE
[What's This?]
Today, you are likely to spend a great deal of time going from convenience store to convenience store seeking to buy either a rechargeable flashlight or storage boxes for your computer software CDs. Be on the lookout for cardboard boxes.
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Mark Twain said "I wonder how much it would take to buy soap buble if there was only one in the world."
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"If a man hasn't discovered something that he will die for, he isn't fit to live. " -- Martin Luther King Jr., clergyman
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SFE
Sydney Futures Exchange
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