Railway Recruitment Board (RRB) has released its new normalization formula for the examinations conducted by them 2021 onwards. This revised normalized calculator will be used for multi shifts papers conducted by RRB like NTPC or Group D or other zonal exams. The difficulty level of all the shifts varies so to normalize that in an effective way a new formula has been published by Railway Recruitment Board.
The normalized score depends on the parameters that are based on the performance of candidates attending the exam in the different sessions. The process involves the raw score of the candidate, mean and standard deviation of raw marks of candidates in his/her session as well as other sessions being normalized. The raw score is the calculation of actual marks scored by the candidate by the no. of questions attempted with an accuracy of right answers.
Read here: RRB Normalized formula revised 2021
The normalization formula used by RRBs is as under: Xn= (S2/S1) (X-Xav) + Yav
Where Xn= Normalised Score of a Candidate
S2= Standard Deviation of raw marks of Base Session
S1= Standard Deviation of raw marks of Candidate Session
X= Raw marks of candidate which is to be normalized
Xav = Average of raw marks of Candidate Session
Yav = Average of raw marks of Base Session.
The Raw Score is computed as under:
Total Questions-100; No of Questions Ignored (question wrong, multiple options correct etc): 2
No of Questions attempted: 60; Correctly Answered: 54
Wrongly Answered: 6 Positive Marks: 54
Negative Marks: 2
Net Score: 54-2=52
Score Out of 100: (52/98)*100= 53.06
The key features of new formula related are :
Read here : Information regarding New Normalization formula
When an examination is conducted in multiple sessions for the same syllabus, in spite of all efforts there are chances of variation in the difficulty level of the questions in various sessions. Thus the score obtained by the candidates of same caliber is likely to vary. In order to equalize the variation in the difficulty level of question papers a process called statistical normalization of marks is resorted to universally. This ensures level playing field for all the candidates.
The normalization process has no discretion or human intervention as stated in the notice. So, whenever Computer-Based Tests (CBT) are conducted in multiple sessions by RRB, the raw marks obtained by the candidates in different sessions will be converted to normalized marks for fair selection process.
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Anjali Srivastava works as a Content writer & blogger for SSC, Railway, Bank exams. An aspirant who has Cleared Tier 1 & 2 CGL (2018) & SBI, LIC, FCI preliminary exam. Write Quora answers & active in Quora Space.
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