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Number 10 having trouble with the whole problem

Mathematics
Tutor: None Selected Time limit: 0 Hours

Mar 22nd, 2015


Class
3033
36
39
42

frequency
2
6
10
8
4
sum = 30
(x-x')^2
16
0
16
4
4
sum (x-x')^2 = 40














mean, x'  = sum / number of sample = 30/5 =6

variance = sum (x-x')^2 -sum (x)  = 40-30 =10

standard deviation = Sqrt (variance) = Sqrt(10) = 3.16

Mar 22nd, 2015

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