The age and value of 10 second-hand cars of the same model were recorded. The scatter graph shows this information.
| Age (years) | Value (£1000s) |
|---|---|
| 1 | 15.0 |
| 2 | 14.0 |
| 3 | 12.0 |
| 4 | 11.5 |
| 5 | 9.0 |
| 6 | 8.0 |
| 7 | 6.5 |
| 8 | 5.0 |
| 9 | 3.5 |
| 10 | 2.0 |
What type of correlation does the scatter graph show?
A car of the same model is 4.5 years old. Estimate the value of this car.
The car dealer wants to use the scatter graph to predict the value of a car that is 20 years old. Comment on the reliability of this prediction.
Practise Edexcel GCSE Maths Scatter Graphs with exam-style questions for Foundation and Higher tier. 55 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
