(a) Use the information given in the adjoining histogram to construct a frequency table.
(b) Use this table to construct an ogive.
[4 Marks]
(a)
\begin{tabular}{|c|c|c|}
\hline Class Interval & Frequency & c.f. \\
\hline \( 8-12 \) & 9 & 9 \\
\hline \( 12-16 \) & 16 & 25 \\
\hline \( 16-20 \) & 22 & 47 \\
\hline \( 20-24 \) & 18 & 65 \\
\hline \( 24-28 \) & 12 & 77 \\
\hline \( 28-32 \) & 4 & 81 \\
\hline
\end{tabular}
[1 Mark]
(b) Now plot the points (12,9),(16,25),(20,47),(24,65),(28,77),(32,81), and join them to obtain an ogive.
[1 Mark]
[2 Marks]