The following data set represents a random sample of resting pulse rates of 21 males and 21 females.

Males

74 75 69 72 75 73 88 76 71 64 67 71 72 82 71 83 82 78 80 81 75

Females

75 57 61 71 79 78 81 65 57 80 73 83 86 79 65 70 69 76 55 66 79

1. Now construct refined stem-and-leaf plots by using eight stems. Set the stems up as follows:

5*

5#

6*

6#

etc.

The stems with * should be followed by leaves 0,1,2,3, or 4. The stems with # should be followed by leaves 5,6,7,8, or 9. For example, the numbers 54,53,57 would appear as: 5* 4 3 5# 7

You should again have two plots: one for men and one for women.