
186 STATISTICAL LEARNING AND DATA SCIENCE
corresponding academic se c tors. We verified that in 90% of cases, students found themselve s
in their or iginal academic choice. In less than 10% of cas e s a re students assigned to other
sectors, and we realize that this declassification is fully justified in relation to our objectives.
For example, among the dataset consisting of 70 students enrolled in biology in 1987, we
had 63 students who are being reassigned to biology. Among the 7 not reassigned (10%),
we have:
• Two are assigned to {sciences, engineering} because their biology level is low and their
mathematics level is high.
• One is assigned to {co ...