What is random sampling?
+ advantage
Where everyone in the entire target population has an equal chance of being selected
Advantage
-straight forward way of getting the precise people
What is volunteer sampling?
+ weakness
People put themselves forward to a study. Usually from a advert (in a appropriate place)
Weakness
Who comes forward might not be representative of everyone
What is opportunity sampling?
+ weakness
People that are available at the time
Weakness
The participants might lack population validity