How do you find the coefficient of variation for two samples like this one

Question

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?

Male: 86 72 64 72 72 54 66 56 80 72 64 64 96 58 66 Female: 64 84 82 70 74 86 90 88 90 90 94 68 90 82 80

Answer 1

The coefficient of variation is the ratio of the standard deviation to the mean * 100 (percentage). The higher the CV the more variation there is in the data. The lower the CV the more precise the mean is as an estimate.