Question

The sixth class interval for a grouped data whose first two class intervals are 10 – 15 and 15 – 20 is ______. 

Answer 1

The sixth class interval for a grouped data whose first two class intervals are 10 – 15 and 15 – 20 is 35 – 40.

Explanation:

First interval = 10 – 15

Second interval = 15 – 20

Clearly, Size of class interval = 5

Therefore, Third interval = 20 – 25

Fourth interval = 25 – 30

Fifth interval = 30 – 35

Sixth interval = 35 – 40