Question: $$ begin{array}{1} text { Approximate the mean of the frequency distribution for the ages of the residents of a town. } begin{array}{cc} text { Age

$$ \begin{array}{1} \text { Approximate the mean of the frequency distribution for the ages of the residents of a town. } \begin{array}{cc} \text { Age } & \text { Frequency } W \hline 0-9 & 25 W 10-19 & 29 20-29 & 12 30-39 & 18 W 40-49 & 31 W \hline 50-59 & 45 W 60-69 & 48 70-79 & 19 80-89 & 8 \end{array) \end{array} $$ S.P.PB. 228
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