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July 1, 2025 

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INDEX: A measure of the relative average of a group of items compared to a given base value. Index measures are commonly used in economics to combine and compare diverse measures. One common type of index measure is for prices, such as the Consumer Price Index and the Dow Jones Industrial Average of corporate stock prices. Another noted type of index measure is to track macroeconomic activity, especially the index leading economic indicators. Indexes are usually weighted averages rather than simple arithmetic means that are measured relative to a base value or period. The Consumer Price Index, for example, measures the prices of consumer good, weighted by the quantities purchased. The value of a given period is then stated relative to a base year value, which generates a pure, "unitless" number in the range of 100 (give or take).

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COMPETITION AMONG THE MANY: A market with so many buyers and sellers that none is able to influence the market price or quantity exchanged. This type of competition is the one most favored by economists (the other type is competition among the few). Compared to a three-person sprint, this is like a 10,000-entry road race. To win this race, I can't count on the other 9,999 coming up injured. To win, I may have to be the best I've ever been. I just might have to set a world record. This is the type of competition that brings out the best, most efficient use of resources.

     See also | competition | competition among the few | market | fourth rule of competition | efficiency | market control | market structure | perfect competition | monopoly | monopolistic competition | oligopoly | unfair competition | market share | antitrust laws |


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COMPETITION AMONG THE MANY, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2025. [Accessed: July 1, 2025].


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PRODUCTION FUNCTION

A mathematical relation between the production of a good or service and the inputs used. A production function captures the general relation between total production and one or more inputs. The standard production function includes labor and capital as the inputs. However, a production function is general enough that any number of inputs can be included

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