| Marks |
3 |
4 |
5 |
6 |
7 |
8 |
| Frequency |
5 |
y - 1 |
y |
9 |
4 |
1 |
The table above gives the frequency distribution of marks obtained by a group of students in a test. If the total mark scored is 200, calculate the value of y
Total mark scored = 200
∴200 = 15 + 4y - 4 + 5y + 54 + 28 + 8
200 = 9y + 101
200 - 101 = 9y
99 = 9y
∴y = 11