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\begin{equation*} \frac{3\left( 0 - 2.45 \right) ^{2} + 7\left( 1 - 2.45 \right) ^{2} + 12\left( 2 - 2.45 \right) ^{2} + 11\left( 3 - 2.45 \right) ^{2} + 3\left( 4 - 2.45 \right) ^{2} + 2\left( 5 - 2.45 \right) ^{2} + 2\left( 6 - 2.45 \right) ^{2}} {39} \end{equation*}
which is 2.151.
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