Practice Exam 4

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Unformatted text preview: ndard deviations? __________________________ d) Construct a histogram with class interval width 2, starting at 9.5. 14 13 16 15 17 19 15 14 17 15 15 13 12 14 14 12 14 13 11 15 16 14 16 17 14 20 10 15 14 12 16 16 18 12 11 19 14 16 19 y x 1 4) The weekly record of reported accidents in a large auto assembly plant in a random sample of 40 weeks from the past 10 years is listed below: 34 35 36 35 37 32 31 37 38 34 33 37 35 36 32 35 33 35 32 34 32 30 32 39 34 34 35 33 31 39 38 40 30 36 37 34 36 33 39 34 a) Construct a frequency, relative frequency, cumulative frequency, and relative cumulative frequency table using class intervals of width 2 and starting at 29.5. b) Construct a histogram. c) Construct a frequency polygon. d) Construct a cumulative frequency polygon. e) Find the mean of the grouped data ______________________________ f) Find the standard deviation of the grouped data ____________________ g) Find the median of the ungrouped data ____________________________________ h) What is the...
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