Prometric Steps of calculating CAT Scores
CAT is a common admission test, which is meant for management aspirants for getting admission into the most valuable post graduate degree and having an exciting career opportunity. CAT is conducted by IIMs & there are 153 other Management Institutes that accept CAT score for selection of candidates.
Finally, Prometric has successfully released the first ever computer based CAT results on 28th Feb 2010. CAT 2009 covers three major 
sections (1) Verbal Ability, (2) Quantitative Ability, and (3) Data Interpretation and Logical Reasoning. Each section has its own importance and scoring was done in three steps which are as follows:
Prometric Steps of calculating CAT Scores
First Process, Calculation of raw score:
Raw score is calculated on the number of questions answered correctly, incorrectly, or omitted by candidate for each section.
- For each correct answer, 3 points are added.
- For incorrect answer, -1 point is deducted.
- For not answering any question, 0 point is subtracted
The candidates who solve their test through random guessing are not awarded with scores. This way of calculating CAT score is similar to the marking scheme of GRE examination.
Second Process, “Equating” of raw score:
The assessment of scores on two or more alternate forms can be done through “equating” which is an arithmetical process and these scores can be easily interchanged. For equating scores, industry standard methods were used such as ETS Standards for Quality and Fairness.
Third Process: “Scaling” of Equated Raw score
An equated raw score are placed on a common weighing to check the appropriate analysis of score. For conducting this scaling process, the method of linear transformation was used. This method is based on industry standard practice.
Scaling model of IIM is:
• Section Scores = 0 to 150
• Total Exam Score = 0 to 450
The three sections listed up helps in evaluating the three separate set of knowledge & skills of candidate. A candidate who scores high in one section may not get assurance of scoring high in other section. Each section of CAT is offered percentile rankings as well as overall exam score.
Source: Team Shikha
Date: 8th March, 2010
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