The data file Stock Market Index shows annual returns on a stock market index over 14 years. Test for randomness using the runs test.
Answer to relevant QuestionsRELEVANT Magazine keeps records of traffic (like the number of weekly new visitors) to its Web site from various social networks such as Facebook and Twitter (Butcher 2011). In Example 1.8 we constructed time-series plots of ...A liberal arts college was interested in determining if there were different graduate school patterns for students with undergraduate majors in history and economics. The college surveyed a random sample of recent graduates ...The Speedi-Flex delivery service is conducting a study of its delivery operations. As part of this study it collected data on package type by originating source for one day's operation for one district office in the ...Several types of yogurt are sold in a small general store in New England. From a past study of customer selections, the owner knows that 20% of the customers ordered flavor A, 35%, flavor B, 18%, flavor C, 12%, flavor D, and ...Nine pairs of hypothetical profiles were constructed for corporate employees applying for admission to an executive MBA program. Within each pair, these profiles were identical, except that one candidate was male and the ...
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