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RELATIVE POVERTY LEVEL: The amount of income a person or family needs to purchase a relative amount of basic necessities of life. These basic necessities are identified relative to the current structure of society and the economy. For example, while a refrigerator would be a basic necessity for someone living in the our modern U.S. economy, it probably would not be consider a necessity for nomads of sub-Saharan Africa or aborigines of Australia.

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KINKED-DEMAND CURVE ANALYSIS

An analysis using the kinked-demand curve to explain rigid prices often found with oligopoly. The kinked-demand curve contains two distinct segments--one for higher prices that is more elastic and one for lower prices that is less elastic. Key to this analysis is that the corresponding marginal revenue curve contains three segments--one associated with the more elastic segment, one associated with the less elastic segment, and one associated with the kink. A profit-maximizing firm can then equate marginal cost to a wide range of marginal revenue values along the vertical segment of the marginal revenue curve. This suggests that marginal cost must change significantly before an oligopolistic firm is inclined to change price.

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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 decorative celebrity figurines or a flower arrangement with anything but tulips for your grandfather. Be on the lookout for telephone calls from long-lost relatives.
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During the American Revolution, the price of corn rose 10,000 percent, the price of wheat 14,000 percent, the price of flour 15,000 percent, and the price of beef 33,000 percent.
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