Find the coefficient of variation for the following data: \begin{tabular}{|l|c|c|c|c|c|c|c|} \hl...

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Find the coefficient of variation for the following data:
\begin{tabular}{|l|c|c|c|c|c|c|c|}
\hline Size of item & 10 & 11 & 12 & 13 & 14 & 15 & 16 \\
\hline Frequency & 2 & 7 & 11 & 15 & 10 & 4 & 1 \\
\hline
\end{tabular}
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