Question

In: Math

Find the mean and the Variance of the following sample data: x Frequency (f) 1...

Find the mean and the Variance of the following sample data:

x	Frequency (f)
1	5
2	6
4	9
8	6
12	4

Expert Solution

x f fx x² fx²

1 5 5 1 5

2 6 12 4 24

4 9 36 16 144

8 6 48 64 384

12 4 48 144 576

Total 30 149 1133

Mean =

= 149/30 = 4.97

Variance s^2 =

= 13.5506

milcah answered 9 months ago

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