Question

In a recent survey of students who graduated from a large public high school, nine out of ten students reported that they passed biology with a grade of seventy-five percent or higher. What further data could be produced to be sure that this information is accurate?

a review of the students’ school transcripts
a survey of students from nearby high schools
a consultation with the students’ parents
an interview of students from the previous graduating class

Answer 1

a review of the students’ school transcripts

Reason: transcripts are official records and can objectively verify grades. The other choices either survey different populations (nearby schools or previous class) or rely on potentially unreliable secondhand reports (parents).