Sampling^

Question 1

Random + AO3

Answer 1

equal chance of selection
+ unbiased
+ control CV/ EV
- time consuming
- selected may refuse

Question 2

Systematic + AO3

Answer 2

select every nth person
+ objective as researcher has no choice in participants
- time consuming
- may refuse: volunteer

Question 3

Stratified Sample

Answer 3

sample reflects the proportion of people in different population strata
+ representive
+ generalisation possible
- can’t account for all subgroups

Question 4

Opportunity

Answer 4

pick who is available and willing+ convenient- unpresentativecan’t generalise
+ less time/ money
- volunteer bias

Question 5

Volunteer

Answer 5

participants chose to be in (self-select)
+ engaged participants
+ representative
- volunteer bias