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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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EQUILIBRIUM QUANTITY

The quantity that exists when a market is in equilibrium. Equilibrium quantity is simultaneously equal to both the quantity demanded and quantity supplied. In a market graph, the equilibrium quantity is found at the intersection of the demand curve and the supply curve. Equilibrium quantity is one of two equilibrium variables. The other is equilibrium price.

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Today, you are likely to spend a great deal of time at a going out of business sale looking to buy either a wall poster commemorating the 2000 Presidential election or a rechargeable flashlight. Be on the lookout for vindictive digital clocks with revenge on their minds.
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Post WWI induced hyperinflation in German in the early 1900s raised prices by 726 million times from 1918 to 1923.
"I believe that every right implies a responsibility, every opportunity, an obligation, every possession, a duty. "

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