Question

A grouped frequency distribution table with classes of equal sizes using 63-72 (72 included) as one of the class is constructed for the following data
30,32,45,54,74,78,108,112,66,66,76,88,
40, 14, 20,15,35,44,66,75,84,95,96,102,110,88,74,112,14,34,44.
The number of classes in the distribution will be
A. 9
B. 10
C. 11
D. 12

Answer 1

Correct Answer - B
We arrange the given data into groups like 13-22, 23-22,………..103-112. (since, our data is from 14 to 112). The class width in this class is 9. Now, the given data can be arranged in tabular form as follows.

Hence, the numberof classes in distribution will be 10.