Mrs.Rekha Rajan.K (PGT Economics)
Date of submission 20.10.09
- Find arithmetic mean for the following data:
| Less than | c.f. |
| 5 | 10 |
| 10 | 17 |
| 15 | 23 |
| 20 | 48 |
| 25 | 56 |
| 30 | 65 |
| 35 | 83 |
- Compute median and mode graphically:
| class | frequency |
| 0-10 | 5 |
| 10-20 | 25 |
| 20-30 | 59 |
| 30-40 | 92 |
| 40-50 | 107 |
| 50-60 | 125 |
- Find Q1, Q2 and Q3:
| Class | frequency |
| 0-10 | 6 |
| 10-20 | 8 |
| 20-30 | 2 |
| 30-40 | 3 |
| 40-50 | 1 |
| 50-60 | 5 |
| 60-70 | 7 |
