Find the Midrange for the Given Sample Data $\begin{array} { l l l l l } 7.1 & 6.8 & 7.1 & 7.2 & 7.8 \end{array}$

Find the midrange for the given sample data.
-Bill kept track of the number of hours he spent exercising each week. The results for 15 weeks are shown below. Find the midrange. $\begin{array} { l l l l l } 7.1 & 6.8 & 7.1 & 7.2 & 7.8 \end{array}$
$\begin{array} { l l l l l l } 7.9 & 6.5 & 8.4 & 8.5 & 7.2 \end{array}$
$\begin{array} { l l l l l } 8.5 & 6.8 & 7.9 & 9.0 & 7.8 \end{array}$

A) 7.75 hr
B) 7.8 hr
C) 7.50 hr
D) 2.5 hr