Owen wants to use the Large Data Set to estimate the mean CO emissions, in g/km, of all diesel cars registered in the United Kingdom in 2020.
Using your knowledge of the Large Data Set, give two reasons why Owen cannot do this.
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.