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HERFINDAHL-HIRSHMAN 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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SCIENTIFIC METHOD

A structured way of investigating and explaining the operation of the world by testing and verifying hypothesized relations. The scientific method is a process of discovery, a method of explaining the way the world operates. Positive economics is the application of the scientific method to economic analysis.

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Today, you are likely to spend a great deal of time at a flea market wanting to buy either a T-shirt commemorating yesterday or a pair of handcrafted oven mitts. Be on the lookout for fairy dust that tastes like salt.
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One of the largest markets for gold in the United States is the manufacturing of class rings.
"Most human beings have an almost infinite capacity for taking things for granted. "

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ILO
International Labor Office
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