The result was announced after normalization of the scores. The normalization of scores is done to root out any doubts that the question paper of a particular shift was easy/difficult then the other shift. The normalization process gives each and every candidates of scoring marks irrespective of the difficulty level of his/her paper.
NTA Scores are normalized scores across multi session papers and are based on the relative performance of all those who appeared for the examination in one session. The marks obtained are converted into a scale ranging from 100 to 0 for each session.
The process of Normalization is an established practice for comparing candidate scores across multi session papers and is similar to those being adopted in other large educational selection tests conducted in India. Normalization across sections, NTA shall use the percentile equivalence.
Percentile scores are scores based on the relative performance of all those who appear for the examination. Basically the marks obtained are transformed into a scale ranging from 100 to 0 for each session of examinees.
The Percentile Score indicates the percentage of candidates that have scored EQUAL TO OR BELOW (same or lower raw scores) that particular Percentile in that examination. Therefore the topper(highest score) of each session will get the same Percentile of 100 which is desirable. The marks obtained in between the highest and lowest scores are also converted to appropriate Percentiles.
The Percentile Scores is calculated up to seven decimal places to avoid bunching effect and reduce ties.
The Percentile score of a Candidate is calculated as follows:
100 X Number of candidates appeared in the ‘Session’ with raw score equal to or less than the candidate
100 X Number of candidates appeared in the ‘Session’ with raw score equal to or less than the candidate (divided by)
Total number of the candidates appeared in the ‘Session’
The Percentile of the Total shall not be an aggregate or average of the Percentile of individual subject. Percentile score is not the same as percentage of marks obtained.