If the mean and variance of the frequency distribution
\( \mathrm{P... VIDEO
If the mean and variance of the frequency distribution
\( \mathrm{P} \)
\begin{tabular}{|c|c|c|c|c|c|c|c|c|}
\hline\( x_{i} \) & 2 & 4 & 6 & 8 & 10 & 12 & 14 & 16 \\
\hline\( f_{i} \) & 4 & 4 & \( \alpha \) & 15 & 8 & \( \beta \) & 4 & 5 \\
\hline
\end{tabular}
W
are 9 and 15.08 respectively, then the value of \( \alpha^{2}+\beta^{2}-\alpha \beta \) is
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