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GROSS DOMESTIC INCOME: The total market value of all final goods and services produced within the political boundaries of an economy during a given period of time, usually a year, as calculated using the income approach to measuring gross domestic product. Gross domestic income, abbreviated GDI, is virtually identical to gross domestic product (GDP), with one minor difference, the statistical discrepancy. As a matter of fact, the statistical discrepancy is identified as the difference between GDP and GDI.

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MARKET STRUCTURE: The manner in which a market is organized, based largely on the number of firms in the industry. The four basic market structure models are: perfect competition, monopoly, monopolistic competition, and oligopoly. The primary difference between each is the number of firms on the supply side of a market. Both perfect competition and monopolistic competition have a large number of relatively small firms selling output. Oligopoly has a small number of relatively large firms. And monopoly has a single firm.

     See also | market | industry | perfect competition | monopoly | monopolistic competition | oligopoly | market control | price taker | price maker |


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SHORT-RUN PRODUCTION ALTERNATIVES

A firm faces three production options in the short run based on a comparison between price, average total cost, and average variable cost. If price is greater than average total cost, a firm earns an economic profit by producing the quantity that equates marginal revenue with marginal cost. If price is less than average total cost but greater than average variable cost, a firm incurs an economic loss, but produces the quantity that equates marginal revenue with marginal cost. If price is less than average variable cost, a firm shuts down production in the short run, incurring an economic loss equal to total fixed cost.

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PURPLE SMARPHIN
[What's This?]

Today, you are likely to spend a great deal of time at a dollar discount store looking to buy either a box of multi-colored, plastic paper clips or several orange mixing bowls. Be on the lookout for small children selling products door-to-door.
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This isn't me! What am I?

Woodrow Wilson's portrait adorned the $100,000 bill that was removed from circulation in 1929. Woodrow Wilson was removed from circulation in 1924.
"If you don't know where you are going, any road will get you there."

-- Lewis Carroll, writer

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