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In sociology and statistics research, snowball sampling [1] (or chain sampling, chain-referral sampling, referral sampling [2] [3]) is a nonprobability sampling technique where existing study subjects recruit future subjects from among their acquaintances. Thus the sample group is said to grow like a rolling snowball.
A visual representation of the sampling process. In statistics, quality assurance, and survey methodology, sampling is the selection of a subset or a statistical sample (termed sample for short) of individuals from within a statistical population to estimate characteristics of the whole population. The subset is meant to reflect the whole ...
Sampling methods may be either random (random sampling, systematic sampling, stratified sampling, cluster sampling) or non-random/nonprobability (convenience sampling, purposive sampling, snowball sampling). [3] The most common reason for sampling is to obtain information about a population.
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Raymond Redvers Briggs CBE (18 January 1934 – 9 August 2022) [1] was an English illustrator, cartoonist, graphic novelist and author. Achieving critical and popular success among adults and children, he is best known in Britain for his 1978 story The Snowman, a book without words whose cartoon adaptation is televised and whose musical adaptation is staged every Christmas.
1. The main definition can include some more details like. For eg: under Nonprobability sampling, "Snowball sampling" can be best example of Purposive Sampling or Judgmental sampling. The definition can be improved with respect to some other aspects. 2.
Literature reviews are secondary sources and do not report new or original experimental work. Most often associated with academic-oriented literature, such reviews are found in academic journals and are not to be confused with book reviews, which may also appear in the same publication. Literature reviews are a basis for research in nearly ...
Along with convenience sampling and snowball sampling, consecutive sampling is one of the most commonly used kinds of nonprobability sampling. [3] Consecutive sampling is typically better than convenience sampling in controlling sampling bias. [4]