Question

calculate mean median mode if Marks are-0+10,10-20,20-30,30-40,40-50,50-60,60-70,70-80,80-90 and No. of student are 4,2,18,22,21,19,10,3,1 respectively​

Answer 1

mean : 42.2

median : 41.9

and

mode : 38.