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HERFINDAHL INDEX: A measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.

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UNEMPLOYMENT, PRODUCTION POSSIBILITIES

Unemployment is the condition that exists when some available resources are NOT engaged in the production of goods and services. In other words, some resources that could be used for production are not being used. This is indicated in production possibilities analysis by producing a combination of goods that places the economy inside the production possibilities curve.

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Today, you are likely to spend a great deal of time flipping through the yellow pages wanting to buy either a half-dozen helium filled balloons or a packet of address labels large enough for addresses of both the sender and the recipient. Be on the lookout for rusty deck screws.
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In the Middle Ages, pepper was used for bartering, and it was often more valuable and stable in value than gold.
"Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover."

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