A. Data Preparation
This data set was built from student data mart schema that
resulted from prior studies [7][8] as a data resource. The data
set contains students’ data from two faculties of a university.
This study used two kinds of data set, the first was active
students’ data set and the second was graduates data set.
Preprocessing was performed on raw data by removing
outliers, resolving inconsistencies, and transforming data to
obtain qualify data that ready for classification.