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 |
What type of correlation does the scatter graph show?
Another plant received 9 hours of sunshine. Estimate the growth of this plant.
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.
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.
