Aschool 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.