Find the Variance for the Given Data $$\begin{array} { l l l l l } 11.7 & 17.9 & 18.4 & 12.9 & 17.1 \\15.8 & 11.3 & 28.7 & 18.0 & 26.4\end{array}$$

Short Answer

Find the variance for the given data. Round your answer to one more decimal place than the original data.
-A class of sixth grade students kept accurate records on the amount of time they spent playing video games during a one-week period. The times (in hours) are listed below: $$\begin{array} { l l l l l } 11.7 & 17.9 & 18.4 & 12.9 & 17.1 \\15.8 & 11.3 & 28.7 & 18.0 & 26.4\end{array}$$
A) $147.46 \mathrm { hr } ^ { 2 }$
B) $30.11 \mathrm { hr } ^ { 2 }$
C) $33.46 \mathrm { hr } ^ { 2 }$
D) $33.36 \mathrm { hr } ^ { 2 }$