Fig. 3.

Distribution of data points for ${\text{D}}_1$ and ${\text{D}}_2$ datasets a test 1 ($X_{\text{T1}}$), b test 2 ($X_{\text{T2}}$), c class assessment ($X_{\text{CW}}$), d mid-term evaluation marks ($X_{\text{MTE}}$), e end-term evaluation marks ($X_{\text{ETE}}$), and f total performance of student (Y)