Dependent Factors - Calculation of GATE Marks, Score, Rank & Percentile

The following article showers light on the various dependent factors on which the calculations of GATE Marks, Score, Rank & Percentile are based. I have collected this data from various reliable sources and have compiled it in an easy-to-understand way so that you can have a clear idea about the intricacies behind these terms that decide your fate in GATE.


GATE Marks
Depends on :
Number of Correct answers, Number of Wrong answers
Working Formula :
+1 or +2 for each correct answer &
-1/3 or -2/3 for each wrong answer; depnding on the question type.

GATE Score
Depends on :
GATE Marks(m), Average marks in your paper(a), Standard deviation of marks in your paper(s), Average (global) marks in all papers since 2007(ag), Standard deviation of (global) marks in all papers since 2007(s)
Working Formula :
Score = 10[ag+sg{(m-a)/s}]

So note, GATE Score depends on not just your performance but also on 'performance of candidates of your same paper this year' plus 'performance of candidates of all papers since 2007'.

GATE Rank
The dependent factors regarding calculation of GATE Rank are not disclosed by the GATE organisers. Also it revolves in the air that the working formula is changed every year. No matter what but the probable factors would be like :
Your GATE Score, GATE Cut-off of your Paper, Sectional Cut-off parameters, if any (Not sure. It may be a rumour.), Number of attempted questions, Section-wise marks etc.

GATE Percentile
Depends on :
GATE Rank(r), Number of Candidates in your paper(n)
Working Formula :
Percentile = [(n-r)/n]*100

Note:
Two candidates of same paper can have same Marks, same Score & same Percentile even, but not all 3 same together. Whereas, two candidates of same paper can not have same Rank.
So, GATE Rank is the only stream-wise criterion which determines an absolute differentiation of candidates.

If you have any questions, feel free to ask...