An aviation psychologist investigated the impact of cockpit head-up display (HUD) layout design on pilot task-focus. Using an independent measures design, they compared pilot focus ratings (on a scale from 0 to 15, where 0 represents 'extremely distracted' and 15 represents 'fully focused') between pilots using a 'Highly Cluttered HUD' and those using a 'Minimalist HUD'. The collected data and corresponding ranks are shown in the table below.
| Highly Cluttered HUD | Minimalist HUD | ||
|---|---|---|---|
| Focus Rating | Rank | Focus Rating | Rank |
| 5 | 3 | 14 | 14 |
| 8 | 6.5 | 11 | 10 |
| 4 | 2 | 15 | 15.5 |
| 10 | 9 | 12 | 11.5 |
| 6 | 4.5 | 15 | 15.5 |
| 3 | 1 | 9 | 8 |
| 8 | 6.5 | 12 | 11.5 |
| 6 | 4.5 | 13 | 13 |
Explain what ranking the data means in the context of this study.
