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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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COMPLEMENT-IN-CONSUMPTION

One of two (or more) goods that provide satisfaction of a want or need when consumed together. A complement-in-consumption is one of two alternatives falling within the other prices determinant of demand. The other is a substitute-in-consumption. An increase in the price of one complement good causes a decrease in demand for the other. A complement-in-consumption has a negative cross elasticity of demand.

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Today, you are likely to spend a great deal of time looking for a downtown retail store looking to buy either a genuine fake plastic Tiffany lamp or a microwave over that won't burn your popcorn. Be on the lookout for letters from the Internal Revenue Service.
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In the early 1900s around 300 automobile companies operated in the United States.
"Every generation of Americans needs to know that freedom exists not in doing what we like, but in having the right to do what we ought. "

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CPI-W
Consumer Price Index-Urban Wage Earners and Clerical Workers
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