A car dealership records the age of 10 cars and their resale price. The scatter graph shows this information.
| Age of car (years) | Resale Price (£1000s) |
|---|---|
| 1 | 18.5 |
| 2 | 16.0 |
| 3 | 14.5 |
| 4 | 12.0 |
| 5 | 11.5 |
| 6 | 9.0 |
| 7 | 8.5 |
| 8 | 6.0 |
| 9 | 5.5 |
| 10 | 3.0 |
What type of correlation does the scatter graph show?
A car is 5.5 years old. Estimate the resale price of this car.
The dealer wants to use the scatter graph to predict the resale price for 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.
