A teacher studied students' grades and established with a scatterplot a strong correlation between SAT scores and college grades.Find the lurking variable,if there is one.
A)College
B)High school
C)IQ
D)Attendance
E)No lurking variable

Question

Quizplus · Accepted Answer

Since there is a strong correlation between SAT scores and college grades, it is possible that the students with higher IQs perform better on both the SAT and in college. Therefore, IQ may be the lurking variable that is influencing both the SAT scores and college grades.

A Teacher Studied Students' Grades and Established with a Scatterplot