Researchers investigated the relationship between the duration of screen time used immediately before bed and the duration of deep sleep achieved during the night.
| Participant | Screen time before bed (hours) | Duration of deep sleep (minutes) |
|---|---|---|
| A | 1.0 | 90 |
| B | 2.0 | 80 |
| C | 0.5 | 95 |
| D | 3.0 | 60 |
| E | 4.0 | 45 |
| F | 1.5 | 85 |
| G | 2.5 | 70 |
State the type of relationship shown in the data in Table 1.
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