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WELFARE ECONOMICS: A branch of economics that studies efficiency and the overall well-being of society based on alternative allocations of scarce resources. Welfare economics extends the microeconomic analysis of indifference curves to society as a whole. It is concerned with broad efficiency questions and criteria (Pareto efficiency and Kaldor-Hicks efficiency) as well as more specific efficiency issues (market failures, externalities, public goods).
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FOUR-FIRM CONCENTRATION RATIO The proportion of total output in an industry produced by the four largest firms in an industry. This is one of two common concentration ratios. The other is the eight-firm concentration ratio. Another related measure is the Herfindahl index. The four-firm concentration ratio is commonly used to indicate the degree to which an industry is oligopolistic and the extent of market control held by the four largest firms in the industry.
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BLACK DISMALAPOD
[What's This?]
Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius wanting to buy either a video camera with stop action features or one of those memory foam pillows. Be on the lookout for the happiest person in the room.
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This isn't me! What am I?
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Lewis Carroll, the author of Alice in Wonderland, was the pseudonym of Charles Dodgson, an accomplished mathematician and economist.
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"The past is a foreign country; they do things differently there." -- Leslie Poles Hartley, Writer
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Exports;Marks the Spot
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