Question

find class interval if class marks are 15.5 and 18.5

Answer 1

18.5-15.5=3

Step-by-step explanation:

the class interval is 3

upper limit -lower limit

Answer 2

Answer:

3.0

Step-by-step explanation:

Class interval is the difference between the upper class and the lower class.

So

class interval =18.5-15.5=3.0