Question

The frequency distribution of marks scored by 400 students is as follows:
0-10 10-20 20-30 30-40 40-50 50-60 60-70 70 80
No. of students
26

26
110
84
36
If the mean of the frequency distribution is 41.2 marks, find the missing frequencies * and y
The mean of the following frequency distribution is 46:
32​

Answer 1

Answer:

Just to score points.....