Question

Construct histogram of variable width for the following data.

$CI$	$25-29$	$30-35$	$36-40$	$41-50$	$51-56$	$57-60$
$f$	$10$	$24$	$15$	$20$	$12$	$16$

Answer 1

$\Rightarrow$ Adjusted frequency $=\frac{Minimumclasssize}{Classsize}\times frequency$

Here, Minimum class size $=4$

$CI$	$f$	$Class-size$	$Adjustedfrequency$
$24.5-29.5$	$10$	$5$	$8$
$29.5-35.5$	$24$	$6$	$16$
$35.5-40.5$	$15$	$5$	$12$
$40.5-50.5$	$20$	$10$	$8$
$50.5-56.5$	$12$	$6$	$8$
$56.5-60.5$	$16$	$4$	$16$

We are going to draw histogram between class interval and adjusted frequency.