Question

8. Random pages were chosen from a variety of children's books and the number of words on

each page was recorded. Find the standard deviation of the words per page.
10 15 8 16 14 12 9 12 14 10
02.4
01.5
02.7
07.3

Answer 1

7.3

Explanation:

The variance of the given sample is 7.3

Hence the option A. 7.3 is correct

Explanation:

The formula of Variance is:

x

10 4

15 9

8 16

16 16

14 4

12 0

9 9

12 0

14 4

10 4

Therefore, the variance is: