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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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WANTS

The psychological desires which make life just a little more enjoyable, but which are not biological necessities for life. Psychological wants are often contrasted with physiological needs that make life more enjoyable, but are not essential for existence.

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BLACK DISMALAPOD
[What's This?]

Today, you are likely to spend a great deal of time looking for a downtown retail store hoping to buy either a T-shirt commemorating next Thursday or a birthday gift for your uncle. Be on the lookout for slightly overweight pizza delivery guys.
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This isn't me! What am I?

Ragnar Frisch and Jan Tinbergen were the 1st Nobel Prize winners in Economics in 1969.
"You don't have to be a fantastic hero to do certain things - to compete. You can be just an ordinary chap, sufficiently motivated to reach challenging goals."

-- Sir Edmund Hillary, Explorer

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Government National Mortgage Association
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