A principal wants to survey 100 students about their favorite subject. She asks the first 100 students who walk into the school to fill out a questionnaire. Is this a random sample or a biased sample? Justify your response.

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Mathematics

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25 February, 09:53

A principal wants to survey 100 students about their favorite subject. She asks the first 100 students who walk into the school to fill out a questionnaire. Is this a random sample or a biased sample? Justify your response.

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Lamar · Answer 1

This is a random sample. The principle did not ask a specific group of people for their answer, which could have resulted in a biased sample. Instead the principal asked the first 100 people that walked into the school, which is completely random.