Question: what are the sampling technique in research?
Answer: Simple random sampling. In this case each individual is chosen entirely by chance and each member of the population has an equal chance, or probability, of being selected. ... 
Systematic sampling. ... 
Stratified sampling. ... 
Clustered sampling. ... 
Convenience sampling. ... 
Quota sampling. ... 
Judgement (or Purposive) Sampling. ... 
Snowball sampling.