What are the main differences between Probability and Non-Probability Samples?
- A Probability sample is a sample in which every element in the population has a known statistical likelihood of being selected. (Ex. Simple Random Sample, Stratified Sample, Cluster Sample & Systematic Sample)
- A Nonprobability Sample is any sample in which little or no attempts are made to get a representative cross section of the population. (Ex. Convenience Sample, Judgement Sample, Quota Sample & Snowball Sample)