A factory records the mass of every packet leaving a production line. There are 2400 packets in one shift. An inspector wants a sample of 80 packets spread through the shift.
Describe how a systematic sample could be selected.
State one circumstance in which this systematic sample could be misleading.
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.