Download Schaum's Outline of Beginning Statistics by Larry Stephens PDF

By Larry Stephens

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4 Ans. 7. Ans. 75. Even though the distributions are skewed in both problems, the values are reasonably close. The approximation is closer for mound-shaped distributions than for other distributions. What are the chief advantage and the chief disadvantage of the range as a measure of dispersion? Am. The chief advantage is the simplicity of computation of the range and the chief disadvantage is that it is insensitive to the values between the extremes. 10 The ages and incomes of the 10 employees at Computer Services Inc.

Ans. 5. 43. The range is 525 - 50 = 475. 31. 7. 4 Ans. 7. Ans. 75. Even though the distributions are skewed in both problems, the values are reasonably close. The approximation is closer for mound-shaped distributions than for other distributions. What are the chief advantage and the chief disadvantage of the range as a measure of dispersion? Am. The chief advantage is the simplicity of computation of the range and the chief disadvantage is that it is insensitive to the values between the extremes.

17 gives the frequency distribution for the cholesterol values of 45 patients in a cardiac rehabilitation study. Give the lower and upper class limits and boundaries as well as the class marks for each class. 17 Cholesterol value 170 to 189 I90 to 209 210 to 229 230 to 249 250 to 269 Am. 17. 7 Construct a frequency distribution consisting of six classes for this data set. 5. Ans. 5. 5. 19. 19 using the “less than” form for the classes. A m . 20. 27 ORGANIZING DATA CHAP. 11 The manager of a convenience store records the number of gallons of gasoline purchased for a sample of customers chosen over a one-week period.

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