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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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DURABLE GOODS, CONSUMPTION

Personal consumption expenditures on tangible goods that tend to last for more than a year. Common examples are cars, furniture, and appliances. This is one of three categories of personal consumption expenditures in the National Income and Product Accounts maintained by the Bureau of Economic Analysis. The other two are nondurable goods and services. Durable goods are about 12 percent of personal consumption expenditures and 8 percent of gross domestic product.

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BROWN PRAGMATOX
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Today, you are likely to spend a great deal of time searching for a specialty store hoping to buy either a T-shirt commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki or a wall poster commemorating the 2000 Olympics. Be on the lookout for strangers with large satchels of used undergarments.
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In the early 1900s around 300 automobile companies operated in the United States.
"Most human beings have an almost infinite capacity for taking things for granted. "

-- Aldous Huxley, writer

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