All About JEE Mains Normalisation 2014
PercentileDifference between Percentage & Percentile & calculation of percentile:
Percentage: As you all know percentage is a number out of 100.Percentage marks = (Obtained marks / Total marks) ×100
Percentile:Percentile score of a candidate reflects the number of students who have scored below that student in his/her own Board ( CBSE, ICSE etc..)
Example:In a particular board 4000 candidates appeared in the examination.If a candidate obtained 70 % marks and 2000 students have scored below 70%, then the percentile of that student = (2000×100)/4000 = 50.0
Example:In a particular board 4000 candidates appeared in the examination.If a candidate obtained 70 % marks and 2000 students have scored below 70%, then the percentile of that student = (2000×100)/4000 = 50.0
Normalization of marks
Step 1:Calculate percentile (P) of all the candidate of board XYZ who are eligible for the JEE (Main) exam, with reference to their board result.
For a Board XYZ
Total Number of the candidates appearing in board exam = 4000
For a Board XYZ
Total Number of the candidates appearing in board exam = 4000
Marks of candidates in Board Exam
(m)
|
Number of candidates who scored below the candidate (m)
|
Percentile Calculation
|
Percentile (p1)
|
50%
|
1500
|
(1500/4000)×100
|
37.5
|
60%
|
1700
|
(1700/4000)×100
|
42.5
|
70%
|
2000
|
(2000/4000)×100
|
50.0
|
80%
|
2500
|
(2500/4000)×100
|
62.5
|
90%
|
3500
|
(3500/4000)×100
|
87.5
|
Step:2In the same way calculate the percentile of all the candidates with reference to their JEE main score.
Let total number of the candidates appearing in JEE (Main) exam = 1000000
Let total number of the candidates appearing in JEE (Main) exam = 1000000
JEE(Main) Score
(n)
|
Number of candidates below the candidate with JEE (Main) score (n)
|
Percentile Calculation
|
Percentile (p2)
|
75
|
500000
|
(500000/1000000)×100
|
50.0
|
100
|
600000
|
(600000/1000000)×100
|
60.0
|
150
|
700000
|
(700000/1000000)×100
|
70.0
|
200
|
800000
|
(800000/1000000)×100
|
80.0
|
250
|
900000
|
(900000/1000000)×100
|
90.0
|
Step: 3Use the value of percentile (P1) calculated in step 1 (Table 1) and find out the same value of percentile in the table 2 (step 2). The corresponding JEE (Main) score would represent value of B1.
In our example the percentile of candidate with 70% board marks was 50.
So in table 2, percentile 50.0 represents JEE (Main) score of 75. So, B1 = 75.
In our example the percentile of candidate with 70% board marks was 50.
So in table 2, percentile 50.0 represents JEE (Main) score of 75. So, B1 = 75.
Step:4Calculate the percentile of the candidates of the particular board (say XYZ ) who appeared in the JEE main with reference to their JEE main score.
Number of the candidates of board xyz appeared in JEE main = 4000
Number of the candidates of board xyz appeared in JEE main = 4000
JEE(Main) Score
(n)
|
Number of candidates below the candidate with JEE (Main) score (n)
|
Percentile Calculation
|
Percentile (p3)
|
25
|
1000
|
(1000/4000)×100
|
25.0
|
50
|
1500
|
(1500/4000)×100
|
37.5
|
100
|
2000
|
(2000/4000)×100
|
50.0
|
150
|
3000
|
(3000/4000)×100
|
75.0
|
200
|
3600
|
(3600/4000)×100
|
90.0
|
Step: 5Use the value of percentile (P1) calculated in step 1 (Table 1) and find out the same value in the table 3 (step 4). The corresponding JEE (Main) score would represent value of B2.
In our example the percentile of candidate with 70% board marks was 50.
So in table 3, percentile 50.0 represents JEE (Main) score of 100. So, B2 = 100
Step: 6
In our example the percentile of candidate with 70% board marks was 50.
So in table 3, percentile 50.0 represents JEE (Main) score of 100. So, B2 = 100
Step: 6
Bfinal = 0.5× (B1+B2)
In our example:
B final = 0.5× (75 + 100) = 87.5
For admission to CFTIs, it has been decided to use JEE Mains Marks (AO) and the normalized board marks(× B final) in 60:40 ratio.So,
Composite score for drawing the merit list (c ) = 0.6× AO + 0.4× B finalIn our example:
c = 0.6× 75 + 0.4× 87.5 = 80.
In our example:
B final = 0.5× (75 + 100) = 87.5
For admission to CFTIs, it has been decided to use JEE Mains Marks (AO) and the normalized board marks(× B final) in 60:40 ratio.So,
Composite score for drawing the merit list (c ) = 0.6× AO + 0.4× B finalIn our example:
c = 0.6× 75 + 0.4× 87.5 = 80.
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