Listed below are pulse rates (beats per minute) from samples of adult males and females (from Data Set 1 "Body Data" in Appendix B). Does there appear to be a difference?

Find the coefficient of variation for each of the two samples; then compare the variation. (The same data were used in Section 3-1.)

Male: 86 72 64 72 72 54 66 56 80 72 64 64 96 58 66 Female: 64 8482 70 74 86 90 88 90 90 94 68 90 82 80