A Group Interested in the Result of an Upcoming Ballot

Multiple Choice

A group interested in the result of an upcoming ballot initiative about the public school system is conducting a poll to find the likely outcome. They randomly select registered voters with school-age children from the voting population. The first question in the poll ascertains whether or not the participant is a likely voter and only those people who plan to vote are asked to complete the poll. What is the flaw in this sample?

A) Using random selection
B) There is no flaw.
C) Voter registration status
D) Parental status