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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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ASSUMPTION An initial condition or statement of a model or theory that sets the stage for an analysis by abstracting from the real world. Assumptions are important to economic analysis. Some assumptions are used to simplify a complex analysis into more easily manageable parts. Other assumptions are used as control conditions that are subsequently changed to evaluate the consequences.
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RED AGGRESSERINE
[What's This?]
Today, you are likely to spend a great deal of time at a crowded estate auction trying to buy either a set of steel-belted radial snow tires or a wall poster commemorating the 2000 Presidential election. Be on the lookout for florescent light bulbs that hum folk songs from the sixties.
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This isn't me! What am I?
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A scripophilist is one who collects rare stock and bond certificates, usually from extinct companies.
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"Posterity: you will never know how much it has cost my generation to preserve your freedom. I hope you will make good use of it. " -- John Quincy Adams, 6th U. S. president
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AS-AD
Aggregate Supply-Aggregate Demand Model
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