Practise OCR (MEI) A Level Maths 2.1 Sampling with exam-style questions for A Level Maths. 4 questions covering 2.1.1 Population and sample, 2.1.2 Samples to make informal inferences, 2.1.3 Random sampling, 2.1.4 Variety of sampling techniques, 2.1.5 Select or evaluate sampling techniques, and 2.1 Sampling, matched to the OCR (MEI) A Level Maths (H640) specification and written in Component 01, Component 02 and Component 03 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.