Question 10
The table shows the distribution of marks obtained by students in an examination.
Marks (%) |
0 - 9 |
10 - 19 |
20 - 29 |
30 - 39 |
40 - 49 |
50 - 59 |
60 - 69 |
70 - 79 |
80 - 89 |
90 - 99 |
Frequency |
7 |
11 |
17 |
20 |
29 |
34 |
30 |
25 |
21 |
6 |
- Construct a cumulative frequency table for the distribution.
- Draw the cumulative frequency curve for the distribution.
- Using the curve, find, correct to one decimal place, the:
(i) median mark;
(ii) lowest mark for distinction if 5% of the students passed with distinction.
Observation
