Which of the following is a type of Probability Sampling ?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Cluster Sampling
In probability sampling every unit of the population has a known chance of being selected. Cluster sampling is of this kind.
Judgement sampling depends on the investigator's choice, snowball sampling on existing respondents leading to new ones, and convenience sampling on whoever is easiest to reach. These three are non-probability methods.