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COMPARATIVE ADVANTAGE: The ability to produced one good at a relatively lower opportunity cost than other goods. While pointy-headed economists developed this idea for nations, it's extremely important for people. A comparative advantage means that no matter how good (or bad) you are at producing stuff, there's always something that you're best (or least worst) at doing. Moreover, because you can produce this one thing by giving up less than what others give up, you can sell it or trade it to them. This idea of comparative advantage means that people and nations can benefit by specialization and exchange. You do what you do best, then trade to someone else for what they do best. Both sides in this trade get more and are thus better off after than before.

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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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    PERFECT COMPETITION, EFFICIENCY

    Perfect competition is an idealized market structure that achieves an efficient allocation of resources. This efficiency is achieved because the profit-maximizing quantity of output produced by a perfectly competitive firm results in the equality between price and marginal cost. In the short run, this involves the equality between price and short-run marginal cost. In the long run, this is seen with the equality between price and long-run marginal cost at the minimum efficient scale of production.

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