March 23, 2018 

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ARC ELASTICITY: The average elasticity for discrete changes in two variables, A and B. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of the initial and ending values of each variable, rather than only initial values. Arc elasticity is generally calculated using the midpoint formula. Arc elasticity should be compared with point elasticity. For infinitesimally small changes in variables A and B, arc elasticity is the same as point elasticity.

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Lesson Contents
Unit 1: A Little Magic
  • Money
  • Banks
  • Money Creation
  • Unit 1 Summary
  • Unit 2: Fred Returns
  • Review
  • Currency
  • Paper Loans
  • Money Creation
  • Unit 2 Summary
  • Unit 3: Modern Banking
  • Fractional-Reserve Magic
  • Injection
  • Another Bank
  • Yet Another Bank
  • Total Creation
  • Unit 3 Summary
  • Unit 4: The Multiplier
  • The Concept
  • Reserve Ratio
  • Money Multiplier
  • Unit 4 Summary
  • Unit 5: Policy
  • Control
  • Unit 5 Summary
  • Course Home
    Money Creation

    The magic of money creation as practiced by private banks is the topic of this lesson. While it seems like magic, money creation is a fundamental aspect of fractional-reserve banking. As such, in this lesson we take a look at why and how banks create money (a task they would seem to be the exclusive privilege of government). This examination of money creation provides insight into how government is able to control the economy's money supply.

    • The first unit introduces the magic of money creation, as practiced by the banking system.
    • The second unit presents a hypothetical example of money creation as practiced by Fred the Goldsmith, where the money is different, but the process is comparable to modern banks.
    • The third unit of this lesson, then examines a detailed example of how the banking system goes about creating money when it has an injection of excess reserves.
    • In the fourth unit, the money creation process is summarized in terms of a deposit multiplier, which a thought or two on how this can be expanded to a money multiplier, which interests government as it seeks to control the money supply.
    • The last unit of this lesson examines the money creation process in the context of monetary policies and government control of the money supply.

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    Business investment expenditures that do not depend on income or production (especially national income or even gross domestic product). That is, changes in income do not generate changes in investment. Autonomous investment is best thought of as investment that the business sector undertakes regardless of the state of the economy. It is measured by the intercept term of the investment line. The alternative to autonomous investment is induced investment, which does depend on income.

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    [What's This?]

    Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club wanting to buy either a wall poster commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki or decorative garden figurines. Be on the lookout for celebrities who speak directly to you through your television.
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