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TIE-IN SALE: A type of sale in which consumers can buy one good only if they purchase another good as well. For example, if your grocery store sells you a bag of tea with the condition that you buy a pound of sugar, that would be a tie-in sale. Because they allow a monopoly to increase its profit over what it could make by selling the two goods separately at constant prices, tie-in sales can be used to price discriminate. However, it is important to realize that there are other reasons for tie-in sales other than price discrimination, such as to increase efficiency. For example, when we buy a car, it comes as a package of several goods (tires, engine, etc), which would be very difficult (and inefficient) for consumers to assemble if they were bought separately.
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SURVEY WEEK, CURRENT POPULATION SURVEY The calendar week (Sunday through Saturday) containing the 19th day of the month that is used to conduct the Current Population Survey (CPS). This is the time period in which CPS interviews contact occupants of 60,000 households included in the survey. The survey questions posed by the interviewers then refer to the employment activities of the respondents during the previous calendar week, which is the termed the reference week. The activities of survey respondents during the reference week are the source of information used to estimate the unemployment rate and other employment information generated by the CPS.
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BLUE PLACIDOLA
[What's This?]
Today, you are likely to spend a great deal of time calling an endless list of 800 numbers wanting to buy either a birthday greeting card for your aunt or a wall poster commemorating the moon landing. Be on the lookout for the last item on a shelf.
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The earliest known use of paper currency was about 1270 in China during the rule of Kubla Khan.
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"I feel sorry for the person who canžt get genuinely excited about his work. Not only will he never be satisfied, but he will never achieve anything worthwhile. " -- Walter Chrysler, automaker
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MLE
Maximum Likelihood Estimator
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