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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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FACTOR DEMAND

The willingness and ability of productive activities (usually, business firms) to hire or employ factors of production. Factor demand relates factor price and factor quantity, specifically, it is the range of factor quantities that are demanded at a range of factor prices. This is one half of the factor market. The other half is factor supply. The factors of production subject to factor demand include any and all of the four scarce resources--labor, capital, land, and entrepreneurship. However, because labor involves human beings directly, it is the factor that tends to receive the most scrutiny and analysis.

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Today, you are likely to spend a great deal of time lost in your local discount super center looking to buy either a T-shirt commemorating yesterday or a pair of handcrafted oven mitts. Be on the lookout for cardboard boxes.
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The first paper notes printed in the United States were in denominations of 1 cent, 5 cents, 25 cents, and 50 cents.
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