The scatter graph shows information about the History test marks of some students and the number of hours they spent revising for the exam.
| Hours of Revision | History Mark |
|---|---|
| 1 | 35 |
| 2 | 52 |
| 3 | 48 |
| 5 | 70 |
| 6 | 65 |
| 8 | 82 |
| 9 | 90 |
| 10 | 88 |
What type of correlation does the scatter graph show?
James says, "If I increase the amount of time I spend revising, my History mark will definitely improve." Comment on what James says.
