The value of third quartile Q3 for the following distribution is
Marks Group | 5−10 | 10−15 | 15−20 | 20−25 | 25−30 | 30−35 | 35−40 | 40−45 |
No. of Students | 5 | 6 | 15 | 10 | 5 | 4 | 2 | 1 |
Marks Groups (class) | No. of Students | Cumulative frequency |
5-10 | 5 | 5 |
10-15 | 6 | 11 |
15-20 | 15 | 26 |
20-25 | 10 | 36 |
25-30 | 5 | 41 |
30-35 | 4 | 45 |
35-40 | 2 | 47 |
40-45 | 1 | 48 |
N=48 |