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CATO INSTITUTE: A public policy research foundation that contributes to the public policy debate inspired by the principles of limited government, individual liberty, free markets, and peace. The Institute is named for Cato's Letters, which are 144 libertarian essays written by John Trenchard and Thomas Gordon and first published from 1720 to 1723, condemning tyranny and advancing principles of liberty. These two Englishmen were inspired by Cato the Younger (95-46 B.C.) a Roman statesman who had of the reputation for honesty and incorruptibility in ancient times. The Cato Institute is a non-profit organization founded in 1977 by Edward H. Crane and is headquartered in Washington, D.C.

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Lesson 12: Elasticity and Demand | Unit 4: Determinants Page: 18 of 25

Topic: Substitute Availability <=PAGE BACK | PAGE NEXT=>

  • Elasticity, especially the price elasticity of demand, is affected by three determinants:

  • Elasticity determinants are three ceteris paribus factors -- include substitute availability, time period, and budget proportion -- that are held constant when calculating elasticity and that result in a different value of the coefficient of elasticity when they change.
  • The most important elasticity determinant is substitute availability.

  • Substitute availability makes it possible to switch from one good to another in response to price changes.


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AVERAGE-MARGINAL RELATION

A mathematical connection between a marginal value and the corresponding average value stating that the change in the average value depends on a comparison between the average and the marginal. This mathematical relation between average and marginal surfaces throughout the study of economics, especially production (average product and marginal product), cost (average total cost and marginal cost), and revenue (average revenue and marginal revenue). A similar relation is that between a total value and the corresponding marginal value.

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Post WWI induced hyperinflation in German in the early 1900s raised prices by 726 million times from 1918 to 1923.
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