Question: alculate the sample mean and sample variance for the following frequency distribution of heart rates for a sample of American adults. If necessary, round to

alculate the sample mean 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.

Class	Frequency
51-58	4
59-66	10
67-74	2
75-82	12
83-90	5

Sample Mean=

Sample Variance =

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