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16. These methods involve transformation of the raw scores or the actual marks secured by the candidates based on statistical quantities like mean, standard deviation, percentiles etc., of the scores in that shift and the results are used to achieve normalized scores. There are various methods, by which, this process can be done. Useful reference can be made in this regard to the article titled 'Normalisation of marks in multi-session examinations” authored by Abhay G. Bhatt, Sourish Das and Rajeeva L. Karandikar1.