Question

Question 14

In a frequency distribution with classes 0-10, 10-20 etc., the size of the class intervals is 10. The lower limit of fourth class is:

(a) 40

(b) 50

(c) 20

(d) 30

Answer 1

Ans: (d)
Given classes are 0-10 and 10-20.
As, the class interval of given classes is 10, so the next classes will be 20-30 and 30-40.
As, the fourth class is 30-40.
Hence, the lower limit of fourth class is 30.