Question 12
The number of hours of sunshine and the total growth of 10 different plants were recorded over a week. The scatter graph shows this information.
| Hours of sunshine | Growth (mm) |
|---|---|
| 2 | 5 |
| 4 | 12 |
| 5 | 10 |
| 7 | 18 |
| 8 | 15 |
| 10 | 22 |
| 12 | 20 |
| 13 | 28 |
| 15 | 25 |
| 16 | 32 |
a.[1]
What type of correlation does the scatter graph show?
b.[2]
Another plant received 9 hours of sunshine. Estimate the growth of this plant.
c.[1]
A gardener wants to use the scatter graph to predict the growth for a plant that receives 25 hours of sunshine. Comment on the reliability of this prediction.
Scatter Graphs Questions
55 exam-style questions on WJEC GCSE Maths Scatter Graphs. Each one has a worked solution and a mark scheme showing where the marks go.