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HERFINDAHL INDEX: 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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GOOD TYPES The economy produces four distinct types of goods based on two key characteristics -- consumption rivalry and nonpayer excludability. Consumption rivalry arises if consumption of a good by one person prevents another from also consuming. Nonpayer excludability means potential consumers who do not pay for a good can be excluded from consuming. Private goods are rival in consumption and easily subject to the exclusion of nonpayers. Public goods are nonrival in consumption and the exclusion of nonpayers is virtually impossible. Near-public goods are nonrival in consumption and easily subject to exclusion. Common-property goods are rival in consumption and not easily subject to exclusion. Private goods can be efficiently exchanged through markets. Public, near-public and common-property goods cannot, but require some degree of government involvement for efficiency.
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BLACK DISMALAPOD
[What's This?]
Today, you are likely to spend a great deal of time lost in your local discount super center looking to buy either a T-shirt commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki or a wall poster commemorating the 2000 Olympics. Be on the lookout for malfunctioning pocket calculators.
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Natural gas has no odor. The smell is added artificially so that leaks can be detected.
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"Opportunities are usually disguised as hard work, so most people don't recognize them." -- Ann Landers, columnist
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PSBR
Public Sector Debt Repayment
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