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Mathematics
Mathematics
Problem
For six observations the following sums are known:
∑
x
=
48
\sum x = 48
∑
x
=
48
and
∑
x
2
=
400
\sum x^{2} = 400
∑
x
2
=
400
. Find the population variance
σ
2
\sigma^{2}
σ
2
. a)
3.2
3.2
3.2
b)
16
16
16
c)
2.67
2.67
2.67
d)
1.63
1.63
1.63
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