Calculate the Mean of the Grouped Data from the Given

Multiple Choice

Calculate the mean of the grouped data from the given frequency distribution. (Round to nearest tenth) $$\begin{array} { | l | l | } \hline \text { Class } & \text { Frequency (f) } \\\hline 30 \text { to } 39 & 2 \\\hline 40 \text { to } 49 & 2 \\\hline 50 \text { to } 59 & 2 \\\hline 60 \text { to } 69 & 5 \\\hline\end{array}$$

A) 28.7
B) 25.9
C) 38.3
D) 53.6