1MA0 Higher March 2013 Paper 2 Q23
23 The table shows information about the ages, in years, of 300 students.
| Age (years) | 11 | 12 | 13 | 14 | 15 | 16 |
|---|---|---|---|---|---|---|
| Number of students | 41 | 40 | 50 | 48 | 53 | 68 |
Ian takes a sample of 50 of these students, stratified by age.
Calculate the number of 16 year old students he should have in his sample. (2)
| Answer | Mark | Notes |
|---|---|---|
| 11 | 2 | M1 for a \(\frac{68}{300} \times 50\) oe A1 for 11 (accept 12) |