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ENTRY BARRIER: An institutional, government, technological, or economic restriction 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 Contents
Unit 1: Selling Basics
  • The Concept
  • Supply Price
  • Quantity Supplied
  • Unit 1 Summary
  • Unit 2: Law of Supply
  • Definition
  • Production Cost
  • Unit 2 Summary
  • Unit 3: Supply Curve
  • Schedule
  • Curve
  • Space
  • Unit 3 Summary
  • Unit 4: Determinants
  • Ceteris Paribus Factors
  • Shifters: Increase
  • Shifters: Decrease
  • Types
  • Ch..Ch..Changes
  • Unit 4 Summary
  • Unit 5: Scarcity
  • Limited Resources
  • Unit 5 Summary
  • Unit 6:
  • Unit 6 Summary
  • Course Home
    Supply

    This supply lesson provides an introduction into selling a wide range of goods. In fact, this supply topic does more than offer insight into selling behavior. It's also the second half of the market analysis -- the first half being demand. And to reiterate what I noted during the demand lesson, market analysis is one of the most widely used tools in the study of economics that can be used to explain a lot of economic phenomenon. Of course to use markets, we need both demand and supply. And supply part is our current lesson.

    • The first unit of this lesson introduces the basic concept of supply and a few related terms such as supply price and quantity supplied.
    • In the second unit then we move into a discussion of the law of supply, which captures the basic relation between supply price and quantity supplied.
    • The third unit then develops the supply curve, which is the graphical embodiment of the supply concept.
    • Moving onto the fourth unit, we examine how the five basic supply determinants cause the supply curve to shift from one location to another.
    • And in the fifth and final unit, we make a connection between supply and the limited resources part of scarcity.

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    HOUSEHOLD SECTOR

    The aggregate macroeconomic sector that includes the entire wants and-needs-satisfying population of the economy. The primary economic role of the household sector is consumption. The share of gross domestic product purchased by the household sector is termed consumption expenditures. This is one of four macroeconomic sectors. The other three are business sector, government sector, and foreign sector.

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    APLS

    GRAY SKITTERY
    [What's This?]

    Today, you are likely to spend a great deal of time looking for a downtown retail store looking to buy either a travel case for you toothbrush or a looseleaf notebook binder. Be on the lookout for gnomes hiding in cypress trees.
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    This isn't me! What am I?

    Paper money used by the Commonwealth of Massachusetts prior to the U.S. Revolutionary War, which was issued against the dictates of Britain, was designed by patriot and silversmith, Paul Revere.
    "Nothing great has ever been achieved except by those who dared believe that something inside them was superior to circumstances. "

    -- Bruce Barton, Advertising executive

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