Merits, Limitations, Applications - Snowball Sampling | 11th Statistics : Chapter 2 : Collection of Data and Sampling Methods
Chapter: 11th Statistics : Chapter 2 : Collection of Data and Sampling Methods
Snowball Sampling
Snowball
Sampling:
In
this type, initial group of respondents are selected. Those respondents are
requested to provide the names of additional respondents who belong to the
target population of interest. It is a sampling method that involves the
assistance of study subjects to identify other potential subjects in studies where
subjects are hard to locate such as sex workers, drug abusers, etc. This type
of sampling technique works like a chain referral. Therefore it is also called
chain referral sampling.
Merits:
·
Appropriate
for small specialized population.
·
Useful
in studies involving respondents rare to find.
Limitations:
·
It
takes more time
·
Most
likely not representative
·
Members
of the population, who are little known, disliked or whose opinions conflict
with the respondents, have low probability of being included.
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