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ARC ELASTICITY: The average elasticity for discrete changes in two variables, A and B. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of the initial and ending values of each variable, rather than only initial values. Arc elasticity is generally calculated using the midpoint formula. Arc elasticity should be compared with point elasticity. For infinitesimally small changes in variables A and B, arc elasticity is the same as point elasticity.

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PRICE FLOOR

A legally established minimum price that is imposed on a market ABOVE the price that otherwise would be achieved in equilibrium. A price floor is placed on a market with the goal of keeping the price high, presumably based on the notion that the equilibrium price is too low. If imposed on a competitive market free of market failures, a price floor creates a surplus, or excess supply.

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Today, you are likely to spend a great deal of time searching for a specialty store wanting to buy either a birthday gift for your grandfather or a pleather CD case. Be on the lookout for small children selling products door-to-door.
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The portion of aggregate output U.S. citizens pay in taxes (30%) is less than the other six leading industrialized nations -- Britain, Canada, France, Germany, Italy, or Japan.
"We must be willing to let go of the life we have planned, so as to have the life that is waiting for us. "

-- E. M. Forster, writer

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