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FIRM: An organization that combines resources for the production and supply of goods and services. The firm is used by entrepreneurs to bring together otherwise unproductive resources. The key role played by a firm is the production of output using the economy's scarce resources. Firm's are the means through which society transforms less satisfying resources into more satisfying goods and services. If firms didn't do this deed, then something else would. And we would probably call those something elses firms.
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MARGINAL COST The change in total cost (or total variable cost) resulting from a change in the quantity of output produced by a firm in the short run. Marginal cost (MC) indicates how much total cost changes for a given change in the quantity of output. Because changes in total cost are matched by changes in total variable cost in the short run (total fixed cost is fixed), marginal cost is the change in either total cost or total variable cost. It is found by dividing the change in total cost (or total variable cost) by the change in output. Marginal cost is one of four cost concepts used in short-run production analysis. The other three are average total cost, average fixed cost, and average variable cost.
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General Electric is the only stock from the original 1896 Dow Jones Industrial Average remaining in the current index.
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"Chance favors only the prepared mind." -- Louis Pasteur, biologist
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EJ
Economic Journal
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