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HHI: The common abbreviation for the Herfindahl-Hirshman index (or the Herfindahl index), which is 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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GROSS DOMESTIC PRODUCT, INCOME

A method of estimating gross domestic product (GDP) based on identifying the income (wages, rent, interest, and profit) received by the owners of the four factors of production (labor, capital, land, and entrepreneurship). This is one of two methods used by the Bureau of Economic Analysis in the National Income and Product Accounts to estimate gross domestic product. The other identifies total production from the expenditures by the four macroeconomic sectors.

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Today, you are likely to spend a great deal of time strolling through a department store seeking to buy either a really, really exciting, action-filled video game or a coffee cup commemorating the moon landing. Be on the lookout for neighborhood pets, especially belligerent parrots.
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The 22.6% decline in stock prices on October 19, 1987 was larger than the infamous 12.8% decline on October 29, 1929.
"An organization's ability to learn, and translate that learning into action rapidly, is the ultimate competitive business advantage. "

-- Jack Welch, General Electric chief executive

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