contestada

A school newspaper will survey students about the quality of the
school’s lunch program. Which method will create the least biased
results?
(1) Twenty-five vegetarians are randomly surveyed.
(2) Twenty-five students are randomly chosen from each grade
level.
(3) Students who dislike the school’s lunch program are chosen to
complete the survey.
(4) A booth is set up in the cafeteria for the students to voluntarily
complete the survey.

Respuesta :

Method 2 is the least biased.

1) vegetarians are a select group, so they might have a certain biased perspective
2) if students are chosen randomly from every grade, all grades are included and there will be a variety of responses
3)not all students dislike the program, so it is an unfair representation
4)only students who have a strong opinion will complete the survey

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