\(\begin{array}{c|c} x & 1 & 2 & 3 & 4 & 5 \\ \hline f
MATHEMATICS
JAMB 1994
\(\begin{array}{c|c} x & 1 & 2 & 3 & 4 & 5 \\ \hline f & 2 & 1 & 2 & 1 & 2\end{array}\)
Find the variance of the frequency distribution above
- A. \(\frac{3}{2}\)
- B. \(\frac{9}{4}\)
- C. \(\frac{5}{2}\)
- D. 3
Correct Answer: B. \(\frac{9}{4}\)
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