Find the mean of the following data:
| Marks: | less than 0 | less than 10 | less than 20 | less than 30 | less than 40 | less than 50 |
|---|---|---|---|---|---|---|
| No. of students | 0 | 7 | 19 | 32 | 42 | 50 |
Find the mean of the following data:
| Marks: | less than 0 | less than 10 | less than 20 | less than 30 | less than 40 | less than 50 |
|---|---|---|---|---|---|---|
| No. of students | 0 | 7 | 19 | 32 | 42 | 50 |