JAMB 1999 · UME · Q47
The marks scored by students in a test are given below. Find the median.
| Marks | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of students | 2 | 2 | 11 | 10 | 16 | 51 | 40 | 10 | 25 | 15 | 20 |
Worked solution (try it first)
- Total students: , so the median is halfway between the 101st and 102nd marks.
- Running totals: 2, 4, 15, 25, 41, 92 (mark 5), 132 (mark 6).
- The 93rd to 132nd students all scored 6, so the 101st and 102nd are both 6: the median is 6, option B.