Question: Determine the sample variance and standard deviation for the following data by using the computational formula. Class f 5under 9 20 9under 13 18 13under

Determine the sample variance and standard deviation for the following data by using the computational formula.

Class f 5–under 9 20 9–under 13 18 13–under 17 8 17–under 21 6 21–under 25 2

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