The scaling is the statistical parametermer utilised by the exam conducting body to moderate the exessive advantage of the perticular subject in the examination.
The methodology has developed by the experts who has mase a software to handle the data of students.
Union Public Service Commission was doing scaling system prior to CSAT adoptation but now they have dumped due to its faulty output that was killing the merit but this is still followed by the UPPSC,RPSC,JPSC is different from.
UPPSC follows standard deviation method to balance the result for its examinations, the UPSC’s scaling method was based on the Normalized Equi-Percentile (NEP) method for the optional objective type papers in the Preliminary Examination.
The Normalised Equi-Percentile(NEP) method was followed by the UPSC. NEP method is based upon the assumption of comparability among candidates taking various optional subjects. It is fair to assume that the mental ability of asparants in all optional subjects are about the same at very score range.
For an example that top band of any optional candidates are comparable in ability to the top band of other candidates. This assumption extendes to other score range such as 10%, 15%, 20% etc. Thus, it is possible to statistically adjust the scores in various optional papers .
As the number of students for each subject is large it is reasonable to assume that the scaled marks should lie on a normal distribution curve. For the normal distribution curve of every optional subject, mean of 150 and standard deviation of 30 have been taken.
The scaled scores are computed using the standard Statistical Tables-Areas under the standard normal curve-Annexure II (Colly). It also contains the statistical tables-areas under the standard normal curve as given in Schuam’s Outline Series, Theory and Problems of Statistics SI(metric) edition.
At any given conditions Normalized Equi-Percentile will never exceeds the maximum marks .JPSC has adopted wrong formula that inflated the scaled marks to beyond maximum marks . candidate obtain more than 100% marks,under Normalized Equi-Percentile .
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Dear friends
I am posting here Excerpts of decision of supreme court WP(C) No.17583/2006 17.04.2007 UNION PUBLIC SERVICE COMMISSION …Petitioner – versus – CENTRAN INFORMATION COMMISSION and OTHERS …Respondents
scaling methodology has been developed by the UPSC with the association of renowned experts in the field alongwith application software and this was a part of the recommendation of the Kothari Committee.
UPSC has stated that the scaling system being followed by the Uttar Pradesh PSC (UP PSC) is different from that of the UPSC. It was noted that while the UP PSC was following a linear method (also known as the standard deviation method) for its examinations, the UPSC’s scaling method was based on the Normalized Equi-Percentile (NEP) method for the optional objective type papers in the Preliminary Examination. Annexure-II to the said counter-affidavit spelt out the scaling methods. The Normalised Equi-Percentile method used by the UPSC has been explained as under:- ?Normalized-equi percentile method This method is based on the assumption of comparability among candidates taking various optional subjects. It is fair to assume that the mental ability (and
consequent performance) of candidates in all optional subjects are about the same at very score range. We can assume that top 5% of say History candidates are comparable in ability to the top 5% of say Geography candidates. This assumption can be extended to other score range such as 10%, 15%, 20% etc. Thus, it is possible to statistically adjust the scores in various subjects. Further since the number of candidates for each subject is large (over 1000) it is reasonable to assume that the scaled marks should lie on a normal curve. For the normal distribution curve of each optional subject, mean of 150 and standard deviation of 30 (for a paper with maximum marks of 300) have been taken. The scaled marks are computed using the standard Statistical Tables-Areas under the standard normal curve-Annexure II (Colly).? The same Annexure-II (Colly) also contains the statistical tables-areas under the standard normal curve as given in Schuam’s Outline Series, Theory and Problems of Statistics SI(metric) edition. Various other works are also referred to in the said Annexure-II to the said counter-affidavit and they include:- i) ?Research on Examinations in India? issued by the NCERT; ii) ?Scaling Techniques, what, why and how? issued by the Association of Indian Universities; iii) ?A note on the importance of scaling UPSC Examinations by Standardized Methods? by A. Edwin Harper, Jr., June / Sept., 1978. 17.
SO , at any circumtance Normalized Equi-Percentile will never BEYOND TOTAL MARKS .JPSC has adopted wrong formula that propel scaled marks to beyond total marks .CAN A candidate obtain more than 100% marks,under Normalized Equi-Percentile . As per my best of knowledge it’s answer will NO.
Ranchi High Court quashed TET exam paved the way to quash JPSC as well
jpsc is going to publish fresh result of total 6000 candidated. This will happen after they make fresh merit list based on revised answer keys. Source- prabhat khabar
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