Which one is called non-probability sampling?

Quota sampling
Cluster sampling
Systematic sampling
Stratified random sampling

1 answer

Quota sampling is called non-probability sampling. In quota sampling, the researcher ensures equal representation of certain characteristics within the sample but does not select participants randomly, making it non-probability based. The other options listed—cluster sampling, systematic sampling, and stratified random sampling—are all forms of probability sampling, where participants are selected based on randomization processes.