A cinema manager is studying the time it takes customers to travel to the cinema. She asks the first 45 customers entering the cinema on a Saturday evening how long their journey was.
State the sampling method the cinema manager used.
State and briefly describe an alternative method of non-random sampling the cinema manager could have used to obtain a sample of 45 customers.
23 exam-style questions on Edexcel AS Level Maths Data Collection, covering 1.1 Populations and Samples, 1.2 Sampling, 1.3 Non-Random Sampling, 1.4 Types of Data, and 1.5 The Large Data Set. Each one has a worked solution and a mark scheme showing where the marks go.