Question

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. A sample of 32 cowboys gave the following years of longevity:

58 52 68 86 72 66 97 89 84 91 91 92 66 68 87 86 73 61 70 75 72 73 85 84 90 57 77 76 84 93 58 47

Required:
Make a stem-and-leaf display for these data.

Answer 1

4| 7

5| 2 7 8 8

6| 1 6 6 8 8

7| 0 2 2 3 3 5 6 7

8| 4 4 4 5 6 6 7 9

9| 0 1 1 2 3 7

And with the notation 4|7 represent 47

Explanation:

For this case we have the following dataset given:

58 52 68 86 72 66 97 89 84 91 91 92 66 68 87 86 73 61 70 75 72 73 85 84 90 57 77 76 84 93 58 47

And if we order the dataset in increasing way we got:

47 52 57 58 58 61 66 66 68 68 70 72 72 73 73 75 76 77 84 84 84 85 86 86 87 89 90 91 91 92 93 97

And if we create the stem plot we got:

4| 7

5| 2 7 8 8

6| 1 6 6 8 8

7| 0 2 2 3 3 5 6 7

8| 4 4 4 5 6 6 7 9

9| 0 1 1 2 3 7

And with the notation 4|7 represent 47