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Q.

The following histogram shows the frequency distribution of teaching experiences of 30 teachers in various schools.

Among the subsequent options, what will be the class width of the data?

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a

5

b

10

c

11

d

9

answer is A.

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Detailed Solution

The information of the teacher's teaching experience is provided.
The objective is to find the class width.
Class width is given by the formula,
Class width

= U p p e r class limit - Lower class limit

.
From the graph, consider any one of the class interval, say 0 - 5.
So, the upper limit is 5 and the lower limit is 0.
Substitute the values in the formula,
Class width

= 5 − 0

= 5

The width of the class is 5.
Hence, option 1) is correct.

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The following histogram shows the frequency distribution of teaching experiences of 30 teachers in various schools.Among the subsequent options, what will be the class width of the data?