12 terms
LT: Methods - Sampling
STUDY
PLAY
stratified sampling
Split into sub categories and selected proportion to wide population
Strength of stratified sampling
Representative
Weakness of stratified sampling
time consuming
Opportunity sampling
Participants are however is available at the time
Strength of opportunity sampling
Quick and convenient
Weakness of opportunity sampling
Unrepresentative and open to researcher bias
Volunteer sampling
Participants are volunteers and self selected
Strength of volunteer sampling
Likely motivated so honest actions no
Weakness of volunteer sampling
Biased sample as only certain types of pp apply
Random sampling
every member of the population has an equal chance of being selected
Strengths of random sampling
Free from researcher bias and representative
Weakness of random sampling
time consuming and prior knowledge of target population needed