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LERNER INDEX: The difference between price (p) and marginal cost (mc) as a fraction of price, that is [p-mc]/p. The Lerner index is usually taken as an indicator of market power because the larger the index, the larger the difference between price and marginal cost, that is, the larger the distance between the price and the competitive price. The Lerner index depends on the elasticity of demand. The Lerner index is also called the price-cost margin.
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Lesson Contents
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Unit 1: The Concept |
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Unit 2: A Little More |
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Unit 3: Measurement |
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Unit 4: A Continuum |
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Unit 5: Market Elasticity | |
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Elasticity Basics
In this lesson, we will examine the basics of elasticity, including what it is, how it is measured, and how it is used in market analysis. - The first unit of this lesson, The Concept, introduces the elasticity concept and previews its role in market analysis.
- In the second unit, A Little More, examines the importance of elasticity for such topics as market shocks, taxes, and price controls.
- The third unit, Measurement, takes a close look at how elasticity is measured, focusing on the coefficient of elasticity.
- The fourth unit, A Continuum, examines the five categories of elasticity, ranging from elastic to inelastic, that form a continuum.
- The fifth unit and final unit, Market Elasticity, closes this lesson by introducing four key elasticity concepts for the market demand and supply.
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EASY MONEY A general condition of the economy in which money is relatively abundant and plentiful. In modern times, this condition arises when the monetary authority (Federal Reserve System) undertakes expansionary monetary policy. With easy money, interest rates are generally lower, but inflation tends to creep higher. The alternative to easy money is tight money.
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GREEN LOGIGUIN
[What's This?]
Today, you are likely to spend a great deal of time flipping through the yellow pages trying to buy either a coffee table shaped like the state of Florida or storage boxes for your summer clothes. Be on the lookout for deranged pelicans.
Your Complete Scope
This isn't me! What am I?
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Three-forths of the gold mined each year is used to manufacture jewelry.
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"The time to repair the roof is when the sun is shining." -- John F. Kennedy, 35th U. S. president
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BPEA
Brookings Papers on Economic Activity
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