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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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INCREASING-COST INDUSTRY

A perfectly competitive industry with a positively-sloped long-run industry supply curve that results because expansion of the industry causes higher production cost and resource prices. An increasing-cost industry occurs because the entry of new firms, prompted by an increase in demand, causes the long-run average cost curve of each firm to shift upward, which increases the minimum efficient scale of production.

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Today, you are likely to spend a great deal of time searching for rummage sales seeking to buy either a video camera with stop action features or one of those memory foam pillows. Be on the lookout for vindictive digital clocks with revenge on their minds.
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Ragnar Frisch and Jan Tinbergen were the 1st Nobel Prize winners in Economics in 1969.
"Try not to become a man of success, but rather try to become a man of value. "

-- Albert Einstein

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