A small student group at a large high school wants to know the opinions of stude

Question

A small student group at a large high school wants to know the opinions of students regarding a new school policy. Which survey method is likely to produce the least amount of bias? Members of the group randomly select one of their class periods, then randomly select 10 students from the class to survey. Every tenth person that walks out of the school library is surveyed for a full school day. Randomly select several classes from all classes at the school, then randomly select 10 students from each of these classes to survey. A survey is posted online and an announcement is made to all students inviting them to participate in the survey.

Explanation / Answer

The answer is D. Out of all options, option D will likely have the maximum amount of students participating in the survey hence the larger the size of sample , better the conclusion from the survey.

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