(b) 3.37
x | (x-mean)^2 | |
1 | 36 | |
4 | 9 | |
5 | 4 | |
6 | 1 | |
6 | 1 | |
7 | 0 | |
8 | 1 | |
10 | 9 | |
11 | 16 | |
12 | 25 | |
Total | 70 | 102 |
n | 10 | |
Mean | 7 | |
Sample Standard Deviation | ||
=((Sum of (x-mean)^2)/(n-1))^1/2 | ||
=(102/(10-1))^(1/2) | ||
3.37 |
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