Question

the class mark of a distibution are37,42,47,52,57.determine the class size and the class limits of one last class mark

Answer 1

class size=diff betn any 2 successive class marks
                 =57-52=5
class limit=(57-2.5) to (57+2.5)
                 =54.5 to 59.5

i hope this helps!!

Answer 2

Class size is highest class -lowest class
So the are 35-40,40-45,45-50,55-60
So 40-35=5
Therefore class size=5
Last class is 60