Find the mean, variance and standard deviation for following data: \begin{tabular}{|c|c|c|c|c|c|...
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Find the mean, variance and standard deviation for following data:
\begin{tabular}{|c|c|c|c|c|c|c|c|}
\hline\( x_{i} \) & 4 & 8 & 11 & 17 & 20 & 24 & 32 \\
\hline\( f_{i} \) & 3 & 5 & 9 & 5 & 4 & 3 & 1 \\
\hline
\end{tabular}
\( \mathrm{P} \)
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