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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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TOTAL FACTOR COST CURVE, PERFECT COMPETITION

A curve that graphically represents the relation between total factor cost incurred by a perfectly competitive firm when using a given factor of production to produce a good or service. The total factor cost curve is most important in factor market analysis for the derivation of the marginal factor cost curve.

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GRAY SKITTERY
[What's This?]

Today, you are likely to spend a great deal of time searching for rummage sales looking to buy either a half-dozen helium filled balloons or a packet of address labels large enough for addresses of both the sender and the recipient. Be on the lookout for defective microphones.
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This isn't me! What am I?

Lewis Carroll, the author of Alice in Wonderland, was the pseudonym of Charles Dodgson, an accomplished mathematician and economist.
"Opportunities are usually disguised as hard work, so most people don't recognize them."

-- Ann Landers, columnist

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