Post the declaration of the results by the National Testing Agency early Friday morning, M Jagadesh Kumar, chairperson, the University Grants Commission said that universities will prepare rank lists for UG admissions on the basis of “normalised” scores and not percentile or “raw marks”.
The scorecard released by NTA had two components – the percentile score and the normalised score.
Kumar said that the scores have been normalised to provide a level playing field for students who wrote the exam in the same subject on different days or in different shifts.
This however is bothering candidates for some the normalised scores are less than the percentile and vice versa.
The UGC chairperson said that as the difficulty levels vary from session to session in the same subject it is quite possible that in the scorecard one may see that in a subject the percentile is higher than the normalised marks and in another subject, the percentile is lower than the normalised marks.
“How can we compare the performance of different students on a common scale without normalising? We need to ensure that the admissions are made based on a score that accurately compares the performance of students,” said Kumar.
The UGC chief added, “The CUET score card contains both percentile and normalised marks of the student in each subject. Percentiles indicate the relative performance of a student among a set of students who wrote the test in a given shift in a subject. Using the equipercentile method, the percentiles of the students are converted into normalised marks taking into account the difficulty levels of multiple sessions. The difficulty levels vary from session to session in the same subject. That is why it is quite possible that in the score card you may see that in a subject the percentile is higher than the normalised marks and in another subject, the percentile is lower than the normalised marks. Students need not worry about these differences as CUET normalisation formula was decided by panel of experts from Indian Statistical Institute, IIT Delhi and Delhi University. Universities can use these normalised marks for preparing the rank lists for admissions.”
Stating that the scores have been normalised to provide a level playing field for students since they wrote test in the same subject on different days, Kumar said: “Unlike CUET-UG, other entrance examinations are limited to fewer subjects. In single session entrance tests, one common statistically established method is used to transform the raw marks into a common uniform scale using the percentile method so that the performance of students can be compared to each other.
“But in entrance tests such as CUET-UG, since the test is conducted on different days and in multiple sessions for the same subject, it will give rise to multiple percentiles for each group of students,” he added.
Another problem with using only percentiles is that in subjects such as Sports or Fine Arts, some weightage is given to the skill component by some universities, Kumar explained.
“But addition of raw marks in the skill component and the remaining weightage of percentile cannot be done to prepare the rank list because it would be similar to adding oranges to apples.