Final answer:
The main relationship being investigated in the study is the relationship between class absences and final course grades.
Step-by-step explanation:
The main relationship being investigated in the study is The relationship between class absences and final course grades. The study is examining how class absences impact the final grades that students receive in their courses.
The study mentioned in the example focuses on the absenteeism of college students from math classes and how it affects their performance in those classes. It suggests that missing class increases the drop rate. By comparing the actual student absenteeism rate to the faculty's perception, the study aims to determine if there is a relationship between class absences and final course grades.
Analyzing the impact of class absences on students' health or social life is not the main focus of this study. Additionally, the relationship between students' hobbies and final course grades is not being investigated.