Find the Range for the Given Data Set $\begin{array} { r r r r r } 21.7 & 21.9 & 8.1 & 25.4 & 25.9 \\ 30.6 & 18.7 & 22.7 & 21.2 & 26.3 \end{array}$

Multiple Choice

Find the range for the given data set.
-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.
$\begin{array} { r r r r r } 21.7 & 21.9 & 8.1 & 25.4 & 25.9 \\ 30.6 & 18.7 & 22.7 & 21.2 & 26.3 \end{array}$

A) $25.9 \mathrm { hr }$
B) $8.1 \mathrm { hr }$
C) $22.5 \mathrm { hr }$
D) $0.2 \mathrm { hr }$