Calculate the variance of 2, 3, 3, 4, 5, 5, 5, 7, 7 and 9...
Calculate the variance of 2, 3, 3, 4, 5, 5, 5, 7, 7 and 9
2.2
3.4
4.0
4.2
Correct answer is D
x = 2+3+3+4+5+5+5+7+7+910
=5010
= 5
Variance = ∑(x−x)2N
9+4+4+1+4+4+1610
= 4210
= 4.2
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