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Math 1580 Weekly Homework 1
1. Find the mean, median, mode, range, variance, standard deviation and CV of this data. Use formulas and
show work.
4, 9, 11, 14, 14, 22, 27
2. How long did real cowboys live? One answer may be found in the book The Last Cowboys by Connie
Brooks (University of New Mexico Press). This delightful book presents a thoughtful sociological study of
cowboys in West Texas and Southeastern New Mexico around the year 1890. Assume that a sample of 32
cowboys gave the following years of longevity:
59
52
67
86
72
66
99
89
84
91
91
92
69
68
87
86
73
61
71
75
72
73
85
84
91
57
77
76
84
93
58
49
Make a frequency table showing class limits, class boundaries, midpoints, frequency, relative frequency and
cumulative frequency. Use five classes. Find the mean and standard deviation using the formulas for grouped data.

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