Class 10 Maths · Statistics · NCERT Exercise 13.3 · Question 10
The following table shows the cumulative frequency distribution of marks of 800 students in an examination. Construct a frequency distribution table for the data above.
| Marks | Number of students |
|---|---|
| Below 10 | 10 |
| Below 20 | 50 |
| Below 30 | 130 |
| Below 40 | 270 |
| Below 50 | 440 |
| Below 60 | 570 |
| Below 70 | 670 |
| Below 80 | 740 |
| Below 90 | 780 |
| Below 100 | 800 |
Answer
Class frequencies: -:10, -:40, -:80, -:140, -:170, -:130, -:100, -:70, -:40, -:20 (total 800).
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