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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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RISK

The quantitative probability of different future outcomes occurring. The assignment of probabilities can be subjective (based on a "feeling") or objective (based on historical data). Risk is related to the concept of uncertainty, which is simply not knowing what the future holds. People have three alternative preferences when confronting risk -- risk aversion, risk neutrality, and risk loving. Risk aversion is key to the provision of insurance.

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Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club trying to buy either storage boxes for your family photos or a large, stuffed giraffe. Be on the lookout for defective microphones.
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In his older years, Andrew Carnegie seldom carried money because he was offended by its sight and touch.
"There is no point at which you can say, „Well, I'm successful now. I might as well take a nap.¾"

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