The marks obtained by 25 students in a class are as follows

22,28,30,32,35,37,40,41,43,44,45,45,48,49,52,53,54,56,56,58,60,62,65,68,69

(i) Arrange the above data on frequency distribution taking class interval.

20-29,30-39,40-49,50-59,60-69

(ii) Form the cumulative frequency distribution also.

(i) The frequency distribution of given data is shown below

(ii) The cumilative frequency distribution of the given data is shown below