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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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VOLUNTARY EXCHANGE The process of willingly trading one valuable commodity (good, service, or resource) for another. The key term is "willingly," which distinguishes voluntary exchanges from involuntary exchanges, such as those created by government taxes. Voluntary exchanges are the foundation of market transactions.
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BROWN PRAGMATOX
[What's This?]
Today, you are likely to spend a great deal of time watching the shopping channel seeking to buy either a how-to book on surfing the Internet or a computer that can play music and burn CDs. Be on the lookout for rusty deck screws.
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More money is spent on gardening than on any other hobby.
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"My motto was always to keep swinging. Whether I was in a slump or feeling badly or having trouble off the field, the only thing to do was keep swinging. " -- Hank Aaron, baseball player
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NLS
National Longitudinal Survey
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