Find the mean and variance for each of the data \begin{tabular}{|c|c|c|c|c|c|c|c|} \hline \( \ma...

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Find the mean and variance for each of the data
\begin{tabular}{|c|c|c|c|c|c|c|c|}
\hline \( \mathrm{x}_{\mathrm{i}} \) & 92 & 93 & 97 & 98 & 102 & 104 & 109 \\
\hline \( \mathrm{f}_{\mathrm{i}} \) & 3 & 2 & 3 & 2 & 6 & 3 & 3 \\
\hline
\end{tabular}
\( \mathrm{P} \)
W.
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