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TR: The abbreviation for total revenue, which is the revenue received by a firm for the sale of its output. Total revenue is one of two parts a firm needs for the calculation of economic profit, the other is total cost. In general, total revenue is the price received for selling a good times the quantity of the good sold at that price. For a perfectly competitive firm, which receives a single unchanging price for all output sold, the calculation is relatively easy. For other real world firms, that charge different prices to different buyers for different quantities, the calculation can be more complex.

Total revenue is very important in the analysis a firm's short-run production decision. Two other revenue measures directly related to total cost are average revenue and marginal revenue. Total revenue is often depicting as the total revenue curve. For a perfectly competitive firm, the total revenue curve is a straight line from the origin. For a monopoly, oligopoly, or monopolistically competitive firm, the total revenue curve is "hump-shaped," increasing at a decreasing rate, reaching a peak, then declining.

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SCREENING

When confronted by asymmetric information, the use of small bits of information, or indicators, that suggest more comprehensive information. Screening occurs when those with limited information try to identify indicators suggesting more complete information. It is used in markets with adverse selection and moral hazard, especially in labor markets and in the provision of insurance. Common methods of screening include aptitude tests, affiliations, past behavior, and personal characteristics. A related method is signalling.

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APLS

BLUE PLACIDOLA
[What's This?]

Today, you are likely to spend a great deal of time flipping through the yellow pages seeking to buy either a pair of blue silicon oven mitts or a coffee cup commemorating the 2000 Olympics. Be on the lookout for celebrities who speak directly to you through your television.
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This isn't me! What am I?

Cyrus McCormick not only invented the reaper for harvesting grain, he also invented the installment payment for selling his reaper.
"In the long run men hit only what they aim at. "

-- Henry David Thoreau, philosopher

LRMC
Long Run Marginal Cost
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