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ARC ELASTICITY: The average elasticity for discrete changes in two variables, A and B. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of the initial and ending values of each variable, rather than only initial values. Arc elasticity is generally calculated using the midpoint formula. Arc elasticity should be compared with point elasticity. For infinitesimally small changes in variables A and B, arc elasticity is the same as point elasticity.
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PRICE DISCRIMINATION The act of selling the same good to different buyers for different prices that are not justified by different production costs. This is practiced by suppliers who have achieved some degree of market control, especially monopoly. Common examples of price discrimination are electricity rates, long-distance telephone charges, movie ticket prices, airplane ticket prices, and assorted child or senior citizen discounts. Price discrimination takes the form of one of three degrees: (1) first degree, in which each price is the maximum price that buyers are willing and able to pay, (2) second degree, in which price is based on the quantity sold, and (3) third degree, in which prices are based on an easily identifiable characteristic of the buyer.
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Approximately three-fourths of the U.S. paper currency in circular contains traces of cocaine.
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"The greatest use of life is to spend it for something that will outlast it." -- William James, psychologist
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LISH
last In Still Here
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