A sixth form college has 72 students in Year 12 and 63 students in Year 13.
The head teacher selects a stratified sample of 30 students, stratified by year group.
Describe how this sample could be taken.
Practise Edexcel AS Level Maths Data Collection with exam-style questions for AS Level Maths. 4 questions covering Populations and Samples, Sampling, Non-Random Sampling, Types of Data, and The Large Data Set, matched to the Edexcel AS Level Maths (8MA0) specification and written in Paper 1 and Paper 2 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.