1MA0 Higher June 2015 Paper 1 Q1
1 Here are the heights in centimetres of 20 men.
165 164 176 179 188 178 183 172 180 190
167 159 156 176 173 168 169 182 167 192
(a) Show this information in an ordered stem and leaf diagram. (3)
(b) Work out the percentage of these men with a height greater than 184 cm. (2)
| Working | Answer | Mark | Notes |
|---|---|---|---|
| 15 | 6 9 16 | 4 5 7 7 8 9 17 | 2 3 6 6 8 9 18 | 0 2 3 8 19 | 0 2 | with key | 3 | B2 for a correct ordered stem and leaf diagram (B1 for fully correct unordered or ordered with one error or omission) B1 (indep) for key (units not required) |
| Answer | Mark | Notes |
|---|---|---|
| 15 | 2 | M1 for a method to find "3" as a percentage of the total number of men, eg \(\dfrac{\text{``}3\text{''}}{\text{``}20\text{''}} \times 100\) oe \(\dfrac{\text{``}3\text{''} \times 5}{100}\) or ft from their diagram A1 for 15 cao |