If a researcher offers beer drinkers an extra incentive to recruit their friends who also drink beer to participate in the study,s/he is using a(n)________sample.
A)cluster
B)systematic
C)stratified
D)snowball
E)none of the above

Question

Quizplus · Accepted Answer

A snowball sample is a type of non-probability sampling method in which the initial participants are chosen and then asked to recruit other participants from their social network. By offering an incentive to recruit friends, the researcher is using a snowball sampling technique. The other options (cluster, systematic, and stratified) all involve different probability sampling methods.

If a Researcher Offers Beer Drinkers an Extra Incentive to Recruit