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ABSTRACTION METHODS: Abstraction is the process of simplifying the complexities of the real world by ignoring (hopefully) unimportant details, especially (for our purposes) while doing economic analysis. Three common methods of actual, real world abstraction used in economic theories are words, graphs, and equations. Words can be misunderstood. Graphs are a little more precise. And equations tend to be the most precise of the three.

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Lesson 12: Elasticity and Demand | Unit 5: Other Measures Page: 25 of 25

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In this unit, you should have learned about:
  • The price elasticity of supply that complements the price elasticity of demand in market analysis.
  • The income elasticity of demand, which is used to identify normal, inferior, and superior goods.
  • The cross elasticity of demand, which is used to identify substitutes and complements.

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PRICE STABILITY

The condition in which the average price level in the economy changes very slowly, if at all. This is a key part of the macroeconomic goal of stability. Price stability is commonly indicated by the inflation rate, calculated as percentage change in either the Consumer Price Index (CPI) or the GDP price deflator. Price stability is generally achieved by the ABSENCE of large or rapid increases or decreases in the price level.

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Today, you are likely to spend a great deal of time surfing the Internet wanting to buy either a wall poster commemorating the first day of spring or a lazy Susan for you dining room table. Be on the lookout for gnomes hiding in cypress trees.
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Potato chips were invented in 1853 by a irritated chef repeatedly seeking to appease the hard to please Cornelius Vanderbilt who demanded french fried potatoes that were thinner and crisper than normal.
"To sit back and let fate play its hand out, and never influence it, is not the way man was meant to operate."

-- John Glenn, astronaut, U.S. senator

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