Class 10 Maths · Statistics · NCERT Exercise 13.3 · Question 2
Calculate the mean of the scores of students in a mathematics test:
| Marks | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 |
|---|---|---|---|---|---|
| Number of students | 2 | 4 | 7 | 6 | 1 |
Answer
Mean marks .
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