Question

The width of the classes 9.5 – 14.5, 14.5 – 19.5,
19.5 – 24.5 … is
(1) 6 (2) 5
(3) 8 (4) 7

Answer 1

Upper class limit - Lower class limit = 5

Answer 2

The width of the classes 9.5 – 14.5 , 14.5 – 19.5 , 19.5 – 24.5 … is 5

Given :

The classes 9.5 – 14.5 , 14.5 – 19.5 , 19.5 – 24.5

To find :

The width of the classes 9.5 – 14.5 , 14.5 – 19.5 , 19.5 – 24.5 … is

(1) 6

(2) 5

(3) 8

(4) 7

Concept :

Class width :

Class Length or Class Size or Class Width of the class interval of any class is defined to be the difference between the lower and upper class boundaries ( not class limits) of that particular class interval.

Class width = Upper Class boundary - Lower class boundary

Solution :

Step 1 of 2 :

Write down the given classes

The given classes are 9.5 – 14.5 , 14.5 – 19.5 , 19.5 – 24.5 …

Step 2 of 2 :

Find the width of the classes

We take the class 9.5 – 14.5

Upper Class boundary = 14.5

Lower class boundary = 9.5

Class width

= Upper Class boundary - Lower class boundary

= 14.5 - 9.5

= 5

Hence the correct option is (2) 5

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