Question

Convert the frequency distribution into a continuous grouped frequency
distribution and identify in which interval does 29.5 and 39.5 lies?
Class interval
20 – 29
30 – 39
40 – 49
50 – 59
60 – 69
70 - 79
frequency
7
7
15
10
5
6

Answer 1

$\begin{tabular}{c | 1} Class Interval & Frequency \\ \cline{1-2} 19.5-29.5 & 7 \\ 29.5-39.5 & 7 \\ 39.5-49.5 & 15 \\ 49.5-59.5 & 10 \\ 59.5-69.5 & 5 \\ 69.5-79.5 & 6 \\ \end{tabular}$

I have made the frequency table but it is not working here....you need to open it in browser...

See the attachment