A marine biologist investigated the ecological health of 10 different coral reef sites. The biologist recorded the number of shark sightings over a 24-hour observation period and a health index rating (out of 10) for each site. The results are shown in Table 1.
| Reef site | Shark sightings | Health index |
|---|---|---|
| 1 | 3 | 7 |
| 2 | 5 | 6 |
| 3 | 3 | 8 |
| 4 | 6 | 7 |
| 5 | 3 | 5 |
| 6 | 2 | 7 |
| 7 | 8 | 9 |
| 8 | 3 | 7 |
| 9 | 4 | 4 |
| 10 | 5 | 7 |
Give the mode for both sets of data in Table 1.
Mode for shark sightings: _____
Mode for health index: _____
235 exam-style questions on AQA A Level Psychology Data handling and analysis. Each one has a worked solution and a mark scheme showing where the marks go.