Find the value of the missing variate for the following distribution whose mean is 10 :
\begin{t...
Find the value of the missing variate for the following distribution whose mean is 10 :
\begin{tabular}{|l|l|l|l|l|l|l|c|}
\hline Variate \( \left(x_{i}\right) \) & 5 & 7 & 9 & 11 & \( \cdots \) & 15 & 20 \\
\hline Frequency \( \left(f_{i}\right) \) & 4 & 4 & 4 & 7 & 3 & 2 & 1 \\
\hline
\end{tabular}
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