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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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ENTREPRENEURIAL BEHAVIOR

A preference for changing the status quo over maintaining it based on relatively greater satisfaction generated by novel information over redundant information. Entrepreneurial behavior underlies the inclination to undertake invention and innovation, including the creation of something new as well as the distribution and adoption of the new throughout society. It is the behavior most likely exhibited by entrepreneurship. An alternative is managerial behavior, which is a preference for maintaining the status quo over changing it.

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Today, you are likely to spend a great deal of time driving to a factory outlet wanting to buy either a lazy Susan for you dining room table or a set of serrated steak knives, with durable plastic handles. Be on the lookout for small children selling products door-to-door.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
"I not only use all the brains that I have, but all that I can borrow. "

-- Woodrow Wilson, 28th US president

ARIMA
Autoregressive Integrated Moving Average
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