Calculate the sample standard deviation and sample variance for the following frequency distribution of heart rates for a sample
of American adults. If necessary, round to one more decimal place than the largest number of decimal places given in the data. Lower Bound Upper Bound Frequency
56 64 11
65 73 15
74 82 14
83 91 4
92 100 11
Required:
a. What is the sample standard deviation?
b. What is the sample variance?