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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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INDUSTRY

A group of firms producing goods or services that are close substitutes-in-consumption. The similarity of the products makes it possible to analyze the production in a market framework. An industry can be broadly defined, such as the manufacturing industry, or narrowly specified, such as the root beer industry. For most economic analysis the term industry is used interchangeably with the term market.

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APLS

BEIGE MUNDORTLE
[What's This?]

Today, you are likely to spend a great deal of time at a garage sale looking to buy either a blue mechanical pencil or super soft, super cuddly, stuffed animals. Be on the lookout for empty parking spaces that appear to be near the entrance to a store.
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This isn't me! What am I?

Al Capone's business card said he was a used furniture dealer.
"Don't be afraid of the space between your dreams and reality. If you can dream it, you can make it so."

-- Belva Davis, Journalist

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Purchasing Power Parity
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