Question

The weight of $30$ students of a class ($kg$) are as given:

$43,45,64,42,54,78,91,90,56,37,48,90,50,48,67$

$85,30,39,49,40,50,45,68,90,50,34,56,88,43,50$

Convert the data in the form of grouped data frequency distribution.

Answer 1

Assuming the class size $=50-40=10$
Lower class limit $=$ $30-\frac{10}{2}=25$
Upper class limit $=$ $30+\frac{10}{2}=60$
Constructing the grouped frequency distribution table:

Weight ($kg$)	Frequency
$25-35$	$2$
$35-45$	$8$
$45-55$	$8$
$55-65$	$3$
$65-75$	$2$
$75-85$	$3$
$85-95$	$4$
Total	$30$