A council officer wishes to investigate satisfaction with a new bus service. She asks passengers waiting at the town-centre stop between 8 a.m. and 9 a.m. on one Monday.
State the sampling technique used.
Give two reasons why this sample may not represent all users of the service.
Suggest one change that would improve the sampling process.
36 exam-style questions on WJEC A Level Maths 2.1 Statistical Sampling, covering 2.1.1 Statistical Sampling, 2.1.2 Statistical Sampling, 2.1.3 Statistical Sampling, 2.1.4 Statistical Sampling, and 2.1 Statistical Sampling. Each one has a worked solution and a mark scheme showing where the marks go.