From Paper 2: Pure Mathematics and Statistics
76 marks
A council surveyed residents' ages in two towns using a sample of 80 people from each town, chosen from people walking through the town centre on a Saturday morning.
(a) Compare the ages in the two towns.
(b) Name the sampling method and give one reason why it may not give a representative sample.
| Town A | Town B | |
|---|---|---|
| Median age | 32 | 28 |
| Interquartile range | 14 | 22 |