There are 550 students in a school. They all study either French or German or Spanish.
| Language | French | Spanish | German |
|---|---|---|---|
| Number of Students | 181 | 146 | 223 |
An inspector decides to take a sample of 40 students stratified by the language they study.
Calculate the number of students who study German in the sample.
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.