Question

Calculate the mean of the scores of 20 students in a mathematics test : (2 Marks)
Marks. No.Of.Students
0-10. 2
10-20. 4
20-30. 7
30-40. 6
40-50. 1


2
4
7
6
1
​

Answer 1

Answer:

If u want to find mean then -

sum of all value / total values

Put the values and u will get your answer .