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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