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HERFINDAHL INDEX: A measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.

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Lesson 18: Monopoly | Unit 4: Evaluation Page: 22 of 30

Topic: Economic Profit <=PAGE BACK | PAGE NEXT=>

  • The $49 of total revenue generated at the 7-units profit-maximizing level of production is divided in the following manner:

    • Total cost is $37.
    • Economic profit is $8.
    • Total fixed cost is $10.
    • Total variable cost is $27.

  • The economic profit generated by this monopoly is positive for this particular set of revenue and cost conditions.


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EQUILIBRIUM, SHORT-RUN AGGREGATE MARKET

The state of equilibrium that exists in the short-run aggregate market when real aggregate expenditures are equal to full-employment real production with no imbalances to induce changes in the price level or real production. The opposing forces of aggregate demand (the buyers) and short-run aggregate supply (the sellers) exactly offset each other. At the existing price level, the four macroeconomic sectors (household, business, government, and foreign) purchase all of the real production that they seek and producers sell all of the real production that they have.

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Today, you are likely to spend a great deal of time searching for a specialty store wanting to buy either a birthday gift for your grandfather or a pleather CD case. Be on the lookout for fairy dust that tastes like salt.
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Ragnar Frisch and Jan Tinbergen were the 1st Nobel Prize winners in Economics in 1969.
"You have to find something that you love enough to be able to take risks, jump over the hurdles and break through the brick walls that are always going to be placed in front of you. If you don't have that kind of feeling for what it is you're doing, you'll stop at the first giant hurdle. "

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