## 3 Methodology
### Data Description
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Category** & **Attribute** & **Type** & **Details** \\ \hline \multirow{4}{*}{Student’s grade} & Cumulative GPA & Numeric & The grade point average of all grades a student has secured in a semester or term \\ \cline{2-3}  & \multirow{2}{*}{Overall GPA} & \multirow{2}{*}{Numeric} & An average of all cumulative GPAs that a student has secured in all semesters and all the courses in an academic term \\ \cline{2-3}  & \multirow{2}{*}{Diff credits} & \multirow{2}{*}{Numeric} & The difference between the applied credits and the credits taken. \\ \cline{2-3}  & & Absence & Numeric & The number of absences \\ \cline{2-3}  & \multirow{2}{*}{Late} & \multirow{2}{*}{Numeric} & The number of lates \\ \cline{2-3}  & & Authorize absence & Numeric & The number of authorized lates \\ \hline \multirow{4}{*}{Student’s scholarship} & \multirow{2}{*}{Numeric} & Total scholarship amount received per semester \\ \cline{2-3}  & \multirow{2}{*}{The number of scholarships} & \multirow{2}{*}{Numeric} & The number of scholarship types received per semester \\ \cline{2-3}  & & & The number of scholarship amount received per semester \\ \cline{2-3}  & \multirow{2}{*}{Achievement} & \multirow{2}{*}{Numeric} & Achievement scholarship amount received per semester \\ \cline{2-3}  & & & Bursaries for underprivileged students scholarships \\ \cline{2-3}  & & & amount received per semester \\ \cline{2-3}  & \multirow{2}{*}{Other scholarship} & \multirow{2}{*}{Numeric} & Other scholarship amounts received per semester \\ \cline{2-3}  & & & Labor scholarship amount received per semester \\ \cline{2-3}  & \multirow{2}{*}{Faculty} & \multirow{2}{*}{Numeric} & Faculty scholarship amount received per semester \\ \hline \multirow{4}{*}{Student’s personal background} & \multirow{2}{*}{Income range} & \multirow{2}{*}{Numeric} & The income range of the student’s family \\ \cline{2-3}  & \multirow{2}{*}{Professional classification} & \multirow{2}{*}{Numeric} & Student’s professional classification \\ \cline{2-3}  & & & Military service & Nominal & Whether the student has served in the military. \\ \cline{2-3}  & \multirow{2}{*}{Living area} & \multirow{2}{*}{Numeric} & Living area \\ \cline{2-3}  & & & & Living area \\ \cline{2-3}  & & Suspensions & Numeric & Total semester number of suspensions of schooling \\ \cline{2-3}  & \multirow{2}{*}{Tuition fee} & \multirow{2}{*}{Numeric} & Tuition fees per semester \\ \cline{2-3}  & & & Sex & Nominal & Sex of the student \\ \cline{2-3}  & \multirow{2}{*}{Birth} & \multirow{2}{*}{Numeric} & Year of birth \\ \cline{2-3}  & & & Access year & Numeric & Year of enrollment \\ \hline Student’s status & Dropout & Nominal & Student status: Yes (Dropout) or No (Not dropout) \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Feature Table from Student Data. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Year of** & \begin{tabular}{c} **Number of** \\ **Students in** \\ **School** \\ \end{tabular} & \begin{tabular}{c} **Number of** \\ **Student** \\ **Graduates** \\ \end{tabular} & \
\begin{tabular}{c} **Number of** \\ **Student** \\ **Dropouts** \\ \end{tabular} &
\begin{tabular}{c} **Sum** \\ **Rate** \\ \end{tabular} \\ \hline
2010 & 6 & 4578 & 845 & 5429 & 0.16 \\ \hline
2011 & 24 & 4524 & 852 & 5400 & 0.16 \\ \hline
2012 & 54 & 4483 & 869 & 5406 & 0.16 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Dropout Rate Calculated according to the Cohort Method.