Plz slove all question plz plz slove
Dear student,
9) Making class interval continuous:
| Marks | Mid point (m) | frequency | fm |
| 5.5 - 10.5 | 8 | 20 | 160 |
| 10.5 - 15.5 | 13 | 30 | 390 |
| 15.5 - 20.5 | 18 | 50 | 900 |
| 20.5 - 25.5 | 23 | 40 | 920 |
| 25.5 - 30.5 | 28 | 10 | 280 |
| Total | 150 | 2650 |
Average marks = ∑fm / ∑ f = 2650 / 150 = 17.67
10)
| Marks | Mid point (m) | No of students (f) | fm |
| 0-5 | 2.5 | 10 | 25 |
| 5-10 | 7.5 | 13 | 97.5 |
| 10-15 | 12.5 | 15 | 187.5 |
| 15-20 | 17.5 | 16 | 280 |
| 20-25 | 22.5 | 15 | 337.5 |
| 25-30 | 27.5 | 11 | 302.5 |
| Total | 80 | 1230 |
Mean = ∑ fm / ∑m
Mean = 1230 / 80 = 15.375
Due to paucity of time we cannot solve all your queries, you are therefore requested not to pile up questions in single thread use different threads for different questions.
Regards