Question 6
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 |
a.[1]
What type of correlation does the scatter graph show?
b.[2]
A car of the same model is 4.5 years old. Estimate the value of this car.
c.[1]
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.
Scatter Graphs Questions
55 exam-style questions on AQA GCSE Maths Scatter Graphs. Each one has a worked solution and a mark scheme showing where the marks go.