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ENDOGENOUS VARIABLE: A variable that is identified within the workings of the model. Also termed a dependent variable, an endogenous variable is in essence the "output" of the model. It should be compared with an exogenous variable this is the "input" of the model.

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MARGINAL PRODUCTIVITY THEORY

A theory used to analyze the profit-maximizing quantity of inputs (that is, the services of factor of productions) purchased by a firm in the production of output. Marginal-productivity theory indicates that the demand for a factor of production is based on the marginal product of the factor. In particular, a firm is generally willing to pay a higher price for an input that is more productive and contributes more to output. The demand for an input is thus best termed a derived demand.

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BEIGE MUNDORTLE
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Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway seeking to buy either a flower arrangement for your aunt or a birthday greeting card for your uncle. Be on the lookout for bottles of barbeque sauce that act TOO innocent.
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Cyrus McCormick not only invented the reaper for harvesting grain, he also invented the installment payment for selling his reaper.
"It is the mark of an educated mind to be able to entertain a thought without accepting it."

-- Aristotle

MR
Marginal Revenue
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