RESEARCH METHODOLOGY

Detailed explanation-1: -Snowball sampling, also known as chain-referral or network sampling, is a nonprobability sampling method you can use when test quantities are hard to find. For instance, you may use snowball sampling when conducting research about a small group of people who live in geographically dispersed areas.

Detailed explanation-2: -Snowball sampling uses a small pool of initial informants to nominate, through their social networks, other participants who meet the eligibility criteria and could potentially contribute to a specific study. The term “snowball sampling” reflects an analogy to a snowball increasing in size as it rolls downhill.

Detailed explanation-3: -1. Medical researchers use snowball sampling to collect responses from patients with rare diseases. Suppose you’re researching the symptoms of a condition like a porphyria. People with this disease might be unwilling to speak with a researcher about their illness.