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ENTRY BARRIERS: Institutional, government, technological, or economic restrictions on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.

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Lesson 19: Monopolistic Competition | Unit 2: Revenue And Cost Page: 8 of 22

Topic: The Cost Numbers <=PAGE BACK | PAGE NEXT=>

  • Any monopolistic competition firm's production decision must consider both the revenue received from production and the cost of the production.

  • A few points about these cost numbers:

    1. Most important is the law of diminishing marginal returns, which affects the short-run production of any firm, regardless of market structure.

    2. For the firm's operation, producing five or more units per hour entails decreasing marginal returns.


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CERTIFICATES OF DEPOSIT

Interest-paying bank accounts maintained by traditional commercial banks, credit unions, savings and loan associations, and mutual savings banks that stipulate a fixed interest rate and the length of maturity before the funds can be withdrawn. Certificates of deposit (CDs) pay a higher interest rate than regular savings accounts, but the funds cannot be withdraw at the full interest rate until the maturity date. These are one of two types of time deposits. The other is savings deposits. Certificates of deposit, along with savings deposits and other near monies, are added to M1 to derive M2.

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