Probability sampling is based on a random selection, a controlled procedure that assures that each population element is given a known nonzero chance of selection.
4 Probability Sampling Methods
Simple Random Sampling
Simple random sampling is a procedure that gives each sampling unit in the population an equal and known nonzero probability of being selected.
Systematic Sampling
Systematic sampling is a type of probability sampling method involving selecting elements from an ordered sampling frame.
Stratified Random Sampling
A restricted sampling design, which can be more efficient than simple random sampling, is stratified random sampling.
Cluster Sampling
Cluster sampling is a probability sampling technique where the population is divided into multiple groups or clusters.
