Asked by Marvin

Find the variance for the set of data: 24, 31, 16, 22,22.
Answered by Marvin
is it 22
Answered by Steve
X = {24,31,16,22,22}
µ(X) = 23
X-µ = {1,8,-7,-1,-1}

n
∑(X<sub>i</sub>-µ)^2 / (n-1)
i=1

∑(X-µ)^2 / 4 = (1+64+49+1+1)/5 = 116/4 = 29
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