Dr.Dover is interested in studying the homeless population.He starts at a homeless shelter,and then obtains subjects through referrals from the residents at the shelter.This situation is an example of

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This is an example of snowball sampling, as Dr. Dover is obtaining subjects through referrals from the residents at the shelter. Snowball sampling involves using existing participants to recruit further participants who meet the criteria for inclusion in the study. It is often used when the population being studied is hard to reach or is not easily identifiable.

DrDover Is Interested in Studying the Homeless Population