Compare5 marksStandard
A botanist compares the number of petals in two species of wild rose.
Table 1 shows the petal counts for 10 flowers from each species.
| Flower | Species A | Species B |
|---|---|---|
| 1 | 5 | 4 |
| 2 | 5 | 5 |
| 3 | 5 | 6 |
| 4 | 5 | 7 |
| 5 | 5 | 5 |
| 6 | 5 | 8 |
| 7 | 5 | 4 |
| 8 | 5 | 6 |
| 9 | 5 | 5 |
| 10 | 5 | 7 |
Compare the variation in petal number between the two species. In your answer, refer to the likely genetic and environmental causes of the variation, and state which statistical test you would use to compare the mean petal number between the two species, justifying your choice.