Question

Christel wants to know what the most popular color at her school is. She surveys students grades 1,2,3.

Will the sample be representative or biased? And can you please explain how that answer works. Thx! :)

Answer 1

It will be biased.

Explanation:

By surveying only grades 1, 2, and 3, she is not taking a representation of the entire school. It is possible that the popular color or the color the students like would change over time and the opinion of the younger kids could be different from that of the older kids. Therefore, the sample is biased unless she surveys students from all grades.