1MA0 Higher November 2012 Paper 2 Q9
9 The stem and leaf diagram gives information about the numbers of tomatoes on 31 tomato plants.
| 0 | 8 8 9 |
| 1 | 1 1 5 5 |
| 2 | 1 2 2 6 7 8 8 |
| 3 | 0 2 5 5 7 9 |
| 4 | 2 2 3 5 8 8 |
| 5 | 1 1 3 4 7 |
Key: 5 | 7 = 57 tomatoes
(a) Work out the median. (1)
(b) Work out the interquartile range. (2)
| Answer | Mark | Notes |
|---|---|---|
| 32 | 1 | B1 cao |
| Working | Answer | Mark | Notes |
|---|---|---|---|
| LQ = 21 UQ = 45 | 24 | 2 | M1 for 45 or 21 or 43.5 or 19.5 or 7.75th or 8th or 23.25th or 24th (all of above may be seen in working space or indicated on S&L) or clear attempt to find UQ and LQ from a list of values or in stem and leaf diagram A1 cao |