Question: Find the sample variance and the sample standard deviation for the frequency distribution of the data shown. The data represent the number of miles that

Find the sample variance and the sample standard deviation for the frequency distribution of the data shown. The data represent the number of miles that 20 runners ran during one week.

Class Frequency Midpoint 5.5-10.5 10.5-15.5 15.5-20.5 20.5-25.5 25.5-30.5 30.5-35.5 35.5-40.5 1235 +32

Class Frequency Midpoint 5.5-10.5 10.5-15.5 15.5-20.5 20.5-25.5 25.5-30.5 30.5-35.5 35.5-40.5 1235 +32 8 13 18 23 4 28 33 38

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