Question

following is the frequency distribution table of the marks obtained by 40 studensts in economics in a school less then cumulative frequency distributiontable from it .... class = 0-20 ,20-40, 40-60, 60-80, 80-100, ..... no of student 5,7,23,3,2,

Answer 1

cumulative frequency= 5,12,35,38,40