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AGGREGATE EXPENDITURE DETERMINANT: A ceteris paribus factor that affects aggregate expenditures, but which is assumed constant when the aggregate expenditure line is constructed. Changes in any of the aggregate expenditures determinants cause the aggregate expenditure line to shift. While a wide variety of specific ceteris paribus factors can cause the aggregate expenditure line to shift, it's usually most convenient to group them into the four, broad expenditure categories -- consumption, investment, government purchases, and net exports. The reason is that changes in these expenditures are the direct cause of shifts in the aggregate expenditure line. If any determinant affects aggregate expenditures it MUST affect one of these four expenditures.
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RETURNS TO SCALE Changes in production the occur when all resources are proportionately changed in the long run. Returns to scale come in three forms--increasing, decreasing, or constant based on whether the changes in production are proportionally more than, less than, or equal to the proportional changes in inputs. Returns to scale are the guiding principle for long-run production, playing a similar role that the law of diminishing marginal returns plays for short-run production.
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WHITE GULLIBON
[What's This?]
Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius wanting to buy either a wall poster commemorating the moon landing or storage boxes for your winter clothes. Be on the lookout for malfunctioning pocket calculators.
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This isn't me! What am I?
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A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court!
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"Things turn out best for the people who make the best of the way things turn out." -- Art Linkletter
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NTB
Non-Tariff Barrier
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