Unit Award Scheme

shown knowledge of

1. the key steps of the stratified sampling process

2. the main ways to ensure every area has an equal chance of being sampled in the given ecosystem

3. when it would and would not be suitable to use stratified sampling

4. when it would be appropriate to combine stratified sampling with systematic or random sampling methods

5. at least three advantages of stratified sampling of ecosystems

6. at least three limitations associated with stratified sampling of ecosystems

demonstrated the ability to

7. comment on at least two sampling techniques and the associated bias

8. take part in the setting up of a stratified sampling method on at least one occasion

9. analyse, statistically report and document their findings.