# Hold until mathematics Day 10: fresh data card

The pairs below are invented weekend observations for a different, imaginary pop-up room. They are not local service data.

| Weekend | Later-opening hours, x | Visits during those hours, y |
| --- | ---: | ---: |
| 1 | 1 | 5 |
| 2 | 2 | 7 |
| 3 | 3 | 10 |
| 4 | 4 | 9 |
| 5 | 5 | 13 |
| 6 | 6 | 12 |

For spreadsheet work, enter x in B2:B7 and y in C2:C7. Use a graph and `=CORREL(B2:B7,C2:C7)` (or school-approved equivalent) to support a description of direction, form and strength. State one reason why this sample cannot tell us what would happen to every real reading room.

**Rights:** Original fictional data © NeuroForgeIO Pty Ltd 2026, [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/).