Question

11. Find the mean of the following data by assumed mean method.
Marks Number of students
0 and above
O
80
10 and above
77
20 and above
72
30 and above
65
40 and above
55
50 and above
43
60 and above
28
70 and above
16
80 and above
10
90 and above
8
100 and above
0​

Answer 1

step1 add all values

step2 no. of values

Mean=sum of values/no.of values

tell me is it right and helpful