Question

Construct the class boundaries of the following frequency distribution table. Also construct less than cumulative and greater than cumulative frequency tables.

Ages	$1-3$	$4-6$	$7-9$	$10-12$	$13-15$
No of children	$10$	$12$	$15$	$13$	$9$

Answer 1

$Ages$	$No.ofchildren$
$0.5-3.5$	$10$
$3.5-6.5$	$12$
$6.5-9.5$	$15$
$9.5-12.5$	$13$
$12.5-15.5$	$9$

$\Rightarrow$ Less than frequency table are as follows:

$Mark$	$Frequency$
Less than $3.5$	$10$
Less than $6.5$	$22$
Less than $9.5$	$37$
Less than $12.5$	$50$
Less than $15.5$	$59$

$\Rightarrow$ Greater than frequency are as follows:

$Mark$	$Frequency$
Greater than $0.5$	$59$
Greater than $3.5$	$49$
Greater than $6.5$	$37$
Greater than $9.5$	$22$
Greater than $12.5$	$9$