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ENTRY BARRIERS: Institutional, government, technological, or economic restrictions on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.

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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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APLS

BLACK DISMALAPOD
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Today, you are likely to spend a great deal of time at a going out of business sale wanting to buy either a large, stuffed giraffe or a birthday greeting card for your aunt. Be on the lookout for malfunctioning pocket calculators.
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There were no banks in colonial America before the U.S. Revolutionary War. Anyone seeking a loan did so from another individual.
"We may affirm absolutely that nothing great in the world has been accomplished without passion."

-- Hegel

MSE
Mean Squared Error
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