Snowball sampling
- Non-random sampling
- Does not involve any sampling frame
- Normally used when investigating sensitive or illegal activity (prostitution, benefit fraud) where there is not going to be a list of potential people
- Researcher makes contact with one member of the research population willing to participate and uses this contact to acquire more participants
- Unlikely to be representative
Key Concepts
Cross Sectional - if a sample is cross-sectional, then it will be made up of different people to best represent the research population.
Generalisations - results from a study can be applied to the whole of the research population.
Sample - a small group of people, usually cross-sectional, on whom research will be carried out.
Sampling Frame - the source from which a sample is drawn
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