Find the mean deviation about the mean for the following data :
\begin{tabular}{|l|c|c|c|c|c|c|c...
Find the mean deviation about the mean for the following data :
\begin{tabular}{|l|c|c|c|c|c|c|c|c|}
\hline Size \( \left(x_{i}\right) \) & 1 & 3 & 5 & 7 & 9 & 11 & 13 & 15 \\
\hline Frequency \( \left(f_{i}\right) \) & 3 & 3 & 4 & 14 & 7 & 4 & 3 & 4 \\
\hline
\end{tabular}
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