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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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SECOND RULE OF SUBJECTIVITY

The second of seven basic rules of the economy, stating that market prices are determined by subjective values and the preferences of buyers and resource owners. Contrary to popular opinion, prices and costs are not immutably facts of nature, but are ultimately based on what people are willing to pay or accept.

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Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway looking to buy either a replacement washer for your kitchen faucet or a stretchable, flexible watch band. Be on the lookout for poorly written technical manuals.
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