Snowball sampling is a sampling method used by researchers to generate a pool of participants for a research study through referrals made by individuals who share a particular characteristic of research interest with the target population. Snowball sampling is a non-probability method where new units are recruited by other units to form part of the sample. Learn when to use it, how it works, and its advantages and disadvantages. Explore the details of snowball sampling in this comprehensive guide. Learn about its techniques, applications, and real-life examples. Guide to what is Snowball Sampling . We explain its examples, advantages, types, and comparison with purposive & convenience sampling .