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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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POINT ELASTICITY

The relative responsiveness of a change in one variable (call it B) to an infinitesimally small change in another variable (call it A). The notion of point elasticity typically comes into play when discussing the elasticity at a specific point on a curve.

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Today, you are likely to spend a great deal of time wandering around the downtown area trying to buy either clothing for your pet iguana or a set of hubcaps. Be on the lookout for fairy dust that tastes like salt.
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General Electric is the only stock from the original 1896 Dow Jones Industrial Average remaining in the current index.
"I love the man who can smile in trouble, who can gather strength from distress and grow brave by reflection. "

-- Thomas Paine, statesman

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