Write the class size and class limits in each of the following:
$47, 52, 57, 62, 67, 72, 77, 82, 87, 92, 97$ and $102$

Academic Mathematics NCERT Class 9

Given:

$47, 52, 57, 62, 67, 72, 77, 82, 87, 92, 97$ and $102$

To do:

We have to write the class size and class limit.

Solution:

$47, 52, 57, 62, 67, 72, 77, 82, 87, 92, 97$ and $102$

Class size $= 52 - 47$

$= 5$

Class Mark	Lower class limit	Upper class limit	Class limit
47	$47-\frac{5}{2}=44.5$	$47+\frac{5}{2}=49.5$	$44.5-49.5$
52	$52-\frac{5}{2}=49.5$	$52+\frac{5}{2}=54.5$	$49.5-54.5$
57	$57-\frac{5}{2}=54.5$	$57+\frac{5}{2}=59.5$	$54.5-59.5$
62	$62-\frac{5}{2}=59.5$	$62+\frac{5}{2}=64.5$	$59.5-64.5$
67	$67-\frac{5}{2}=64.5$	$67+\frac{5}{2}=69.5$	$64.5-69.5$
72	$72-\frac{5}{2}=69.5$	$72+\frac{5}{2}=74.5$	$69.5-74.5$
77	$77-\frac{5}{2}=74.5$	$77+\frac{5}{2}=79.5$	$74.5-79.5$
82	$82-\frac{5}{2}=79.5$	$82+\frac{5}{2}=84.5$	$79.5-84.5$
87	$87-\frac{5}{2}=84.5$	$87+\frac{5}{2}=89.5$	$84.5-89.5$
92	$92-\frac{5}{2}=89.5$	$92+\frac{5}{2}=94.5$	$89.5-94.5$
97	$97-\frac{5}{2}=94.5$	$97+\frac{5}{2}=99.5$	$94.5-99.5$
102	$102-\frac{5}{2}=99.5$	$102+\frac{5}{2}=104.5$	$99.5-104.5$

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Updated on: 10-Oct-2022

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