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INDIFFERENCE MAP: A graph of two or more indifference curves. Higher indifference curves are associated with higher levels of utility.

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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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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius looking to buy either a replacement battery for your pocket calculator or a how-to book on home remodeling. Be on the lookout for vindictive digital clocks with revenge on their minds.
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In the early 1900s around 300 automobile companies operated in the United States.
"In every man's life there lies latent energy. There is, however, a spark that, if kindled, will set the whole being afire, and he will become a human dynamo, capable of accomplishing almost anything to which he aspires. "

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Association of South East Asian Nations
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