In constructing a frequency distribution, as the number of classes are decreased, the class width

Decreases

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Increases

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Increases or decreases depending on the data values

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Remains unchanged

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Solution

The correct option is B Increases
Class width = $\frac{(H i g h e s t s c o r e - L o w e s t s c o r e)}{N o . o f c l a s s e s}$
Hence as the number of classes of a frequency distribution decreases, the class width increases.

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Similar questions

30, 32, 45, 54, 74, 78, 108, 112, 66, 76, 88

40, 14, 20, 15, 35, 44, 66, 75, 84, 95, 96

Construct a frequency distribution with a class interval of 4 on exclusive basis for the following data:

91, 94, 111, 121, 95, 103, 99, 110, 100, 101, 92, 105, 110, 111, 93, 96, 98, 106, 94, 115

The marks obtained by 25 students in a class are as follows

22, 28, 30, 32, 35, 37, 40, 41, 43, 44, 45, 45, 48, 49, 52, 53, 54, 56, 56, 58, 60, 62, 65, 68, 69

(i) Arrange the above data on frequency distribution taking class interval.

20-29, 30-39, 40-49, 50-59, 60-69

(ii) Form the cumulative frequency distribution.

Class Marks	$10$	$22$	$34$	$46$	$58$	$70$
Frequency	$6$	$14$	$20$	$21$	$9$	$5$

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