Snowball sampling contravenes many of the assumptions supporting conventional notions of random selection and representativeness  However, social systems are beyond researchers' ability to recruit randomly.
For example, a threatening political environment under authoritarian regime creates obstacles for the investigators to conduct the research.
Therefore, referring to national statistics only, made it impossible to build a sample frame for this research. Please help improve it by rewriting it in an encyclopedic style. By targeting only a few select people, it is not always indicative What is snowball sampling the actual trends within the result group.
Graphically What is snowball sampling, these sampling ranged in "length" i. Unknown sampling population size: Identifying the appropriate person to conduct the sampling, as well as locating the correct targets is a time-consuming process such that the benefits only slightly outweigh the costs.
Sample one was started with a year-old British heroin user whose referrals included a year-old Italian. Increased level of confidence contributed to higher response rate  Less costly relative to traditional snowball sampling technique  Disadvantages[ edit ] Even though the virtual sampling method can increase representativeness of the results, sample selection is biased towards the characteristics of online population such as gender, age, education level, socioeconomic level, etc.
Snowball sampling method does not require complex planning and the staffing required is considerably smaller in comparison to other sampling methods.
The investigators use previous contact and communication with subjects then, the investigators are able to gain access and cooperation from new subjects.
Inferential statistics were also used to determine whether the distributions for age and the time it took for a field worker to locate a nominee speed were significant and whether the respective snowballs were drawn from populations with the same distributions.
Individuals that are drug users or prostitutes, for example, are likely to be less willing to identify themselves and take part in a piece of research than many other social groups. The result of one snowball sample Figure 1 graphically shows the traits in this sample in terms or the days it took to find a specific nominee, the operationalization of speed.
Lack of control over sampling method: It brings new advantages but also disadvantages for the researcher. Its proponents  argue that it has a number of advantages relative to other snowballing techniques: There are no lists or other obvious sources for locating members of the population e.
To be successful requires previous contacts within the target areas, and the ability to keep the information flow going throughout the target group. Therefore, referring to national statistics only, made it impossible to build a sample frame for this research.
Whilst stereotypical, we may expect that a larger proportion of these frequent drug users did not show up to the lectures compared to the causal users. About 60 percent of this population has double nationality — both Spanish and Argentinian.
By targeting only a few select people, it is not always indicative of the actual trends within the result group. The second question was seen as especially appropriate for and "ascending" sampling strategy because it cannot be assumed that each snowball is drawn from the same population when only an "imperfect sampling frame" composed of a "special list" compiled by nominees, is available.
It is effectively used to avoid bias in snowball sampling. Collectively, all student drug users make up our population.Snowball sampling (also known as chain-referral sampling) is a non-probability (non-random) sampling method used when characteristics to be possessed by samples are rare and difficult to find.
For example, if you are studying the level of customer satisfaction among elite Nirvana Bali Golf Club in. Snowball sampling (also known as chain-referral sampling) is a non-probability (non-random) sampling method used when characteristics to be possessed by samples are rare and difficult to find.
For example, if you are studying the level of customer satisfaction among elite Nirvana Bali Golf Club in. Snowball sampling is a non-probability sampling method. It doesn’t have the probability involved, with say, simple random sampling (where the odds are the same for any particular participant being chosen).
Snowball sampling is a non-probability sampling technique that is used by researchers to identify potential subjects in studies where subjects are hard to locate.
This article is a part of the guide. Snowball sampling or chain-referral sampling is defined as a non-probability sampling technique in which the samples have traits that are rare to find. This is a sampling technique, in which existing subjects provide referrals to recruit samples required for a research study.
For example, if you. Snowball sampling is a technique in which initially identified members of a population help the researcher identify and locate others.Download