A school has 550 students. Of these, 181 study French, 146 study Spanish and 223 study German. An inspector proposes a sample of 10 French students, 10 Spanish students and 20 German students, chosen at random within each language group.
State the sampling technique proposed.
Explain why the proposal is not proportional to the population.
36 exam-style questions on OCR A Level Maths 2.1 Statistical Sampling, covering 2.1.1 Population and sample, 2.1.2 Informal inferences from samples, 2.1.3 Sampling techniques, 2.1.4 Selecting or critiquing sampling techniques, and 2.1 Statistical Sampling. Each one has a worked solution and a mark scheme showing where the marks go.