Using the large data set Colin studied the relationship between rainfall (rrr) and temperature (ttt) in Camborne. He took a sample of 12 days from July and August 1987 and obtained the following results.
| Rainfall (cm) | 3.2 | 0.2 | 5.1 | 2.3 | 0.5 | 4.0 | 2.0 | 7.4 | 0.2 | 7.0 | 3.8 | 3.2 |
| Temperature (°C) | 10.9 | 9.1 | 9.0 | 9.4 | 11.3 | 10.4 | 12.8 | 10.6 | 11.5 | 11.8 | 13.0 | 13.7 |
Explain why a linear regression model may not be suitable for this data.
46 exam-style questions on Edexcel A Level Maths Correlation, covering 4.1 Correlation and 4.2 Linear Regression. Each one has a worked solution and a mark scheme showing where the marks go.