Weaken the Argument About Study Hours

Very Easy Critical Reasoning Evaluating Data Arguments

A recent study has shown that students who study for more than 15 hours a week score significantly higher on average in mathematics than those who study less than 5 hours a week. Based on this data, the report claims that increasing study hours will lead to better mathematics scores for all students.

Which of the following statements, if true, would most seriously weaken the argument made in the report?

Students who score higher in mathematics tend to have a natural aptitude for the subject.

Many students have busy schedules that limit their study time to under 5 hours.

Students studying alone often prefer study groups that limit their effectiveness.

Some students who study more than 15 hours fail to improve their scores.

Hint

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