The number of previous owners of each of 50 cars on a forecourt is summarised in the table below.
| Number of previous owners | 0 | 1 | 2 | 3 | 4 |
|---|---|---|---|---|---|
| Frequency | 8 | 17 | 14 | 7 | 4 |
Calculate the mean number of previous owners per car.
244 exam-style questions on AQA A Level Maths 2.2 L: Data presentation and interpretation, covering 2.2.1 Single-variable data diagrams, 2.2.2 Scatter diagrams and correlation, 2.2.3 Central tendency, variation and standard deviation, 2.2.4 Outliers and cleaning data, and 2.2 L: Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.