Following are the marks obtained by 20 students of a class in a monthly test of Maths. Present the marks in frequency table and find the mean marks. 60, 70 40, 50, 80, 50 80, 50, 70, 70, 60, 70, 40, 80 70, 50 90, 60, 40, 70.
Answers
Answered by
0
class Interval No of students
0-10 34-32=2
10-20 32-30=2
20-30 30-27=3
30-40 27-23=4
40-50 23-17=6
50-60 17-11=6
60-70 11-6=5
70-80 6-4=2
80-90 4
Similar questions