Question

The marks scored by students in Mathematics in a certain examination are given below:

Marks Scored	Number of Students
$0-20$	$3$
$20-40$	$8$
$40-60$	$15$
$60-80$	$17$
$80-100$	$7$

Draw histogram for the above data.

Answer 1

Mark the classes $0-20,20-40,40-60,...$ on the $X$-axis and number of students on the $Y$-axis.

For each class, mark a horizontal line at the corresponding frequency (no. of students) on the $Y$-axis.

Drop vertical lines from the endpoints of the classes. The obtained graph is a histogram.