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A PRIORI: A presumption made before an analysis is undertaken, often based on experiences, beliefs, or deductions from seemingly self-evident propositions about how the world works. This is a Latin for assumption or axiom. A similar sounding, but opposite term is a posteriori, which is derived from observation or facts. For example, in the study of economics of crime you might assume, a priori, that people are basically "good", because that just seems to be part of human nature, and conclude, a posteriori, that people are more likely to commit crimes when the threat of capture and conviction is lower.

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RESOURCE PRICE, AGGREGATE SUPPLY DETERMINANT

One of three categories of aggregate supply determinants assumed constant when the aggregate supply curve is constructed, and which shifts the aggregate supply curve when it changes. An increase in a resource price causes a decrease (leftward shift) of the short-run aggregate supply curve. A decrease in a resource price causes an increase (rightward shift) of the short-run aggregate supply curve. The other two categories of aggregate supply determinants are resource quantity and resource quality. Specific determinants falling into this general category include wages and energy prices. Anything affecting the prices paid for the use of labor, capital, land, and entrepreneurship is also included.

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Today, you are likely to spend a great deal of time at a garage sale seeking to buy either a pleather CD case or a how-to book on fine dining. Be on the lookout for door-to-door salesmen.
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The Dow Jones family of stock market price indexes began with a simple average of 11 stock prices in 1884.
"Success doesn't come to you . . . you go to it "

-- Marva Collins, Educator

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Weak Axiom of Profit Maximization
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