Scores of students are partitioned into two sets viz. [0, 45) and [45, 100].
Since in the above mentioned examination 45% and above (obviously 60% and above
means first class) marks indicate second class, hence the students are classified as
belonging to two different categories as far as their scores are concerned. As a
consequence idea of binary logistic regression analysis seems to be appropriate when
scores are functions of independent variables mentioned above.