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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 PRODUCT: The change in the quantity of total product resulting from a unit change in a variable input, keeping all other inputs unchanged. Marginal product, usually abbreviated MP, is found by dividing the change in total product by the change in the variable input. Marginal product lies at the very foundation of the analysis of short-run production and the subsequent explanation of the law of supply and the upward-sloping supply curve, using the law of diminishing marginal returns.

     See also | total product | output | input | variable input | fixed input | average product | marginal cost | law of diminishing marginal returns | average-marginal rule | total-marginal rule | short-run production | marginal physical product |


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MARGINAL PRODUCT, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2026. [Accessed: April 13, 2026].


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INDUCED SAVING

Household saving that depends on income or production (especially disposable income, national income, or even gross domestic product). That is, changes in income induce changes in saving. Induced saving reflects the fundamental psychological law put forth by John Maynard Keynes. It is measured by the marginal propensity to save (MPS) and is reflected by the positive slope of saving line. The alternative to induced saving is autonomous saving, which does not depend on income.

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Today, you are likely to spend a great deal of time at a crowded estate auction wanting to buy either a replacement washer for your kitchen faucet or a stretchable, flexible watch band. Be on the lookout for empty parking spaces that appear to be near the entrance to a store.
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Helping spur the U.S. industrial revolution, Thomas Edison patented nearly 1300 inventions, 300 of which came out of his Menlo Park "invention factory" during a four-year period.
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