The number of hours 10 students spent studying for a test and their resulting scores are recorded. The scatter graph shows this information.
| Revision hours | Test score (%) |
|---|---|
| 1 | 25 |
| 2 | 35 |
| 3 | 42 |
| 4 | 50 |
| 5 | 48 |
| 6 | 65 |
| 7 | 62 |
| 8 | 78 |
| 9 | 85 |
| 10 | 82 |
What type of correlation does the scatter graph show?
A student studied for 4.5 hours. Estimate the test score for this student.
A teacher wants to use the scatter graph to predict the test score for a student who studied for 0.5 hours. Comment on the reliability of this prediction.
Scatter Graphs Questions
Practise Edexcel GCSE Maths Scatter Graphs with exam-style questions for Foundation and Higher tier. 56 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.