In a survey of American high schools, it was found that students who attended private schools showed higher academic achievement than students who attended public schools. Which of the following variables could create a spurious correlation between type of school (private versus public) and academic achievement?
A) parent's income
B) school attendance
C) amount of homework assigned
D) strictness of school discipline

Question

Quizplus · Accepted Answer

Parent's income could create a spurious correlation because families with higher income might be more likely to afford private schooling and also provide additional resources that contribute to higher academic achievement, independently of the type of school attended.

In a Survey of American High Schools, It Was Found