Question

Q5. In a grouped frequency
distribution, the class intervals
are 0-10, 10-20, 20-30. ... then
the class width is *​

Answer 1

10-0=10, 20-10=10, 30-20=10 so the answer is 10

Answer 2

In a grouped frequency distribution, the class intervals are 0 - 10 , 10 - 20 , 20 - 30 . . . . then the class width is 10

Given :

In a grouped frequency distribution, the class intervals are 0 - 10 , 10 - 20 , 20 - 30 . . . .

To find :

The class width

Concept :

Class width :

Class width or length of the class interval of an class is defined to be the difference between the lower and upper class boundaries ( not class limits) of that particular class interval.

Class length = Upper Class boundary - Lower class boundary

Solution :

Step 1 of 2 :

Write down the given class intervals

Here it is given that in a grouped frequency distribution, the class intervals are 0 - 10 , 10 - 20 , 20 - 30 . . . .

Step 2 of 2 :

Find class width

Let us consider the Class interval 0 - 10

Upper Class boundary = 10

Lower class boundary = 0

Now Class width of the class interval of an class is defined to be the difference between the lower and upper class boundaries of that particular class interval.

Hence the required class width

= Upper Class boundary - Lower class boundary

= 10 - 0

= 10

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