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I: The standard abbreviation for investment expenditures by the business sector, especially when used in the study of macroeconomics. This abbreviation is most often seen in the aggregate expenditure equation, AE = C + I + G + (X - M), where C, G, and (X - M) represent expenditures by the other three macroeconomic sectors, household, business, and foreign.

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AVERAGE TOTAL COST

Total cost per unit of output, found by dividing total cost by the quantity of output. When compared with price (per unit revenue), average total cost (ATC) indicates the per unit profitability of a profit-maximizing firm. Average total cost is one of three average cost concepts important to short-run production analysis. The other two are average fixed cost and average variable cost. A related concept is marginal cost.

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APLS

RED AGGRESSERINE
[What's This?]

Today, you are likely to spend a great deal of time at a garage sale wanting to buy either a birthday greeting card for your grandmother or a coffee cup commemorating yesterday. Be on the lookout for high interest rates.
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This isn't me! What am I?

John Maynard Keynes was born the same year Karl Marx died.
"If we all did the things we are capable of doing, we would literally astound ourselves."

-- Thomas Edison

WLLN
Weak Law of Large Numbers
A PEDestrian's Guide
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