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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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LAW OF INCREASING OPPORTUNITY COST

The proposition that opportunity cost, the value of foregone production, increases as the quantity of a good produced increases. This fundamental economic principles can be seen in the production possibilities schedule and is illustrated graphically through the slope of the production possibilities curve. It generates a distinctive convex shape, flat at the top and steep at the bottom.

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Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club hoping to buy either a flower arrangement for your aunt or a birthday greeting card for your uncle. Be on the lookout for a thesaurus filled with typos.
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Mark Twain said "I wonder how much it would take to buy soap buble if there was only one in the world."
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