A marine biologist surveys two regions, Region P and Region Q, for the presence of two types of microplastics: microfibers and microbeads. The frequency of each particle type found in water samples from both regions is shown in the table below:
| Particle Type | Region P | Region Q |
|---|---|---|
| Microfibers | 48 | 18 |
| Microbeads | 16 | 72 |
Which of the following represents the ratio of the number of microbeads in Region P to the number of microfibers in Region Q, in its simplest form?
9:89 : 89:8
8:98 : 98:9
2:32 : 32:3
3:23 : 23:2
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.