Foundation June 2025 Paper 1 Q18
18 Here are the heights, in cm, of 12 children.
146 135 142 150 138 149
152 146 137 154 147 144
Show this information in a stem and leaf diagram. (3)
| Answer | Mark | Mark scheme |
|---|---|---|
| 13 | 5 7 8 14 | 2 4 6 6 7 9 15 | 0 2 4 | B2 | for a fully correct ordered diagram |
| (B1 | for a complete unordered diagram or for an ordered diagram with at most one error or omission) | |
| Key: 13 | 5 = 135 or 130 | 5 = 135 | B1 | for a correct key (units not required but must be correct if stated) eg. 13 | 5 or 130 | 5 represents 135 (cm) |
Additional guidance
Accept stem of 130, 140, 150
Can be in reverse vertical order (with matching leaves)
Errors can be omissions; one number in the wrong position is one error
Key must be consistent with the stem