Listed below are pulse rates (beats per minute) from samples of adult males and females. Does there appear to be a difference? Find the coefficient of variation for each of the two samples; then compare the variation.
Male 
89 
70 
63 
70 
71 
50 
62 
53 
83 
69 
62 
64 
98 
56 
66 


Female 
67 
82 
79 
72 
72 
82 
86 
85 
89 
87 
93 
70 
90 
80 
80 
Answer
Enter the data set into excel, then use excel function AVERAGE and STDEV.S to find the mean and sample standard deviation
For Male
x(bar) = AVERAGE(male data)
= 68.4
and
s = STDEV.S(male data)
= 13.07
Coefficient of variation = [s/x(bar)]*100
= (13.07/68.4)*100
= 19.11%
For Female
x(bar) = AVERAGE(female data)
= 80.93
and
s = STDEV.S(female data)
= 7.81
Coefficient of variation = [s/x(bar)]*100
= (7.81/80.93)*100
= 9.64%
So, based on calculations, it is clear that the coefficient of variation is higher for male as compared to female. So, we can say that there is a difference between male and female data
Listed below are pulse rates (beats per minute) from samples of adult males and females. Does there appear to be a difference? Find the coefficient of variation for each of the two samples; then c...
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