Convenience Sampling:
Known as accidental or availability sampling.
Examples: Asking people on the street or students in class.
Purposive Sampling:
Choose people based on what you need for the study.
Used when it's hard to find the right people.
Examples: Interviewing a specific ethnic group or experts.
Quota Sampling:
Divide people into groups (like age or gender) and pick a certain number from each group.
Done by choosing people based on availability, not randomly.
Examples: Picking a certain number of men and women.
Snowball Sampling:
Start with a few people who refer others to join the study.
Used for hard-to-reach groups.
Examples: Studying homeless people or those with rare conditions