Sampling Methods

Question 0

Opportunity sampling

Answer 0

Choose people who are available and willing to take part.
Quick and easy
Could be bias, participants could deliberately behave in ways that support the hypothesis

Question 1

Stratified sampling

Answer 1

Identify the subgroups and work out what proportion of the target population the groups represent. Take out these numbers for your sample.
Unbiased and very representative
Time consuming and difficult

Question 2

Systematic sampling

Answer 2

Selecting every ‘nth’ member of the target population
Unbiased
Very time consuming

Question 3

Random sampling

Answer 3

Every member of the target population has an equal chance of being picked
Fair and not bias
Might not be representative eg all females are drawn out