4400 Higher June 2006 Paper 3 Q5
5 Robin fired 15 arrows at a target.
The table shows information about his scores.
| Score | Frequency |
|---|---|
| 1 | 6 |
| 2 | 3 |
| 3 | 1 |
| 4 | 1 |
| 5 | 4 |
(a) Find his median score. (2)
(b) Work out his mean score. (3)
| Scheme | Marks |
|---|---|
| 1,1,1,1,1,1,2,2,2,3,4,5,5,5,5 or \(7\frac{1}{2}\) or 8 seen | M1 |
| 2 | A1 |
| (2) |
Notes
A1: cao
| Scheme | Marks |
|---|---|
| 1×6 + 2×3 + 3×1 + 4×1 + 5×4 or 6 + 6 + 3 + 4 + 20 or 39 | M1 |
| “39” ÷ 15 | M1 |
| 2.6 | A1 |
| (3) | |
| (5 marks) |
Notes
M1: for at least 3 products (need not be evaluated or summed)
M1: (dep) for “39” ÷ 15
A1: cao