An investigator will be studying nutrition among Hispanic women. To find participants to interview, she requested a list of names and contact information for all Hispanic women from a community clinic. These women had already provided consent and had agreed to be contacted about participating in future research studies. The list included 1,000 names of potential participants for the nutrition study. The investigator chose 200 of the women from this list to contact for possible inclusion in the study.

1. Do the women included on this list represent the larger group?
2. Would you choose participants differently if this was your study? If so, how would you do it?
3. What would happen if the investigator chose individuals from the list that she knew? Would this affect the results of the study? If yes, how? If no, why not?