4400 Higher June 2007 Paper 3 Q3
3 Hajra counted the numbers of sweets in 20 packets.
The table shows information about her results.
| Number of sweets | Frequency |
|---|---|
| 46 | 3 |
| 47 | 6 |
| 48 | 3 |
| 49 | 5 |
| 50 | 2 |
| 51 | 1 |
Work out the mean number of sweets in the 20 packets.
(3)
| Scheme | Marks |
|---|---|
| 46×3+47×6+48×3+49×5+50×2+51×1 or 138+282+144+245+100+51 or 960 | M1 |
| “960” ÷ 20 | M1 |
| 48 | A1 |
| (3) | |
| (3 marks) |
Notes
M1: for finding at least 4 products and adding
M1: (dep) for division by 20
A1: cao