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WIDGET: A fictitious good commonly used by economic instructors to demonstrate economic principles or undertake hypothetical analyses. For example, the analysis of short-run production for a firm might be demonstrated through the production of widgets. Alternatively, the law of demand might be illustrated with a table or curve comparing the price of widgets with the quantity demanded of widgets. If such a good exists, and there is no clear evidence that widgets have every existed, it is a small mechanical device, constructed of interlocking cogs, several knobs, and at least one handle. Widgets are most often used when thingamajigs and dohickies are unavailable.

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Lesson 6: Supply | Unit 4: Determinants Page: 15 of 19

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The five determinants that cause the supply curve to shift are:
  • Resource prices: If the price of any resource (labor, capital, land, or entrepreneurship) changes, so too does production cost and the ability to supply a good.
  • Technology: Improving production techniques enhance the ability to supply a good.
  • Prices of other goods: Goods using the same inputs can be either substitutes or complements in production.
  • Expectations: Sellers' current supply depends on expectations of future prices.
  • Number of sellers: More sellers, more supply. Fewer sellers, less supply.
These categories include all factors other than price that affect supply.

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AVERAGE FACTOR COST AND MARGINAL FACTOR COST

A mathematical connection between average factor cost and marginal factor cost stating that the change in the average factor cost depends on a comparison between average factor cost and marginal factor cost. For perfect competition, with no market control, marginal factor cost is equal to average factor cost, and average factor cost does not change. For monopsony and other firms with market control, marginal factor cost is greater than average factor cost, and average factor cost rises.

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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.
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