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EIGHT-FIRM CONCENTRATION RATIO: The proportion of total output in an industry that's produced by the eight largest firms in the industry. This is one of two common concentration ratios. The other is the four-firm concentration ratio. The eight-firm concentration ratio is commonly used to indicate the degree to which an industry is oligopolistic and how market control is held by the eight largest firms in the industry.

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RENTAL INCOME OF PERSONS

The official item in the National Income and Product Accounts maintained by the Bureau of Economics Analysis measuring rent earned by the household sector for supplying land and related factor services. This is one of five official factor payments making up national income. The other four are compensation of employees, net interest, corporate profits, and proprietors' income. Rental income of persons is typically the smallest of the five factor payment categories, usually less than 5 percent of national income.

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Today, you are likely to spend a great deal of time flipping through the yellow pages trying to buy either yellow cotton balls or a set of steel-belted radial snow tires. Be on the lookout for florescent light bulbs that hum folk songs from the sixties.
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