Introduction
This example is from the Random Effects Models notes of Prof. Robert Schall, UFS.
Students at a specific faculty normally undergo a 4-year degree programme. However, applicants who do not have the required minimum Admission
Point are enrolled in a 5-year programme; that is, they join the regular 4-year programme after an initial year of preparatory classes.
In order to evaluate the effectiveness of the preparatory year, academic results (module marks) of students in the two programs were compared.