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INDUSTRY: A group of firms producing goods or services that are close substitutes-in-consumption. The similarity of the products makes it possible to analyze the production in a market framework. An industry can be broadly defined, such as the manufacturing industry, or narrowly specified, such as the root beer industry. For most economic analysis the term industry is used interchangeably with the term market.

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MIDPOINT ELASTICITY FORMULA

A simple technique for calculating the coefficient of elasticity by estimating the average elasticity for discrete changes in two variables. The distinguishing characteristic of this formula is that percentage changes are calculated based on the average of the initial and ending values of each variable, rather than initial values. An alternative technique is the endpoint elasticity formula.

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Today, you are likely to spend a great deal of time searching the newspaper want ads hoping to buy either 500 feet of telephone cable or a package of 4 by 6 index cards, the ones with lines. Be on the lookout for vindictive digital clocks with revenge on their minds.
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In the early 1900s around 300 automobile companies operated in the United States.
"When I stand before God at the end of my life, I would hope that I would not have a single bit of talent left, and could say, „I used everything you gave me.¾"

-- Erma Bombeck, writer

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