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

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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