Question:
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
Solution:
(d) 30
The lower value of the class interval is called its Lower Class Limit.
First class = 0 -10
Second class = 10 – 20
Third class = 20 – 30
Fourth class = 30 – 40
Fifth class = 40 – 50
and Tenth class = 90 – 100
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