The Heights (In Inches) of 30 Lawyers Are Listed Below $\begin{array}{llllllllll}70 & 72 & 71 & 70 & 69 & 73 & 69 & 68 & 70 & 71\end{array}$

The heights (in inches) of 30 lawyers are listed below. Construct a frequency ogive using five classes. $\begin{array}{llllllllll}70 & 72 & 71 & 70 & 69 & 73 & 69 & 68 & 70 & 71\end{array}$
$\begin{array}{llllllllll}67 & 71 & 70 & 74 & 69 & 68 & 71 & 71 & 71 & 72\end{array}$
$\begin{array}{llllllllll}69 & 71 & 68 & 67 & 73 & 74 & 70 & 71 & 69 & 68\end{array}$