CAT Normalization Process – Know about IIM CAT 2021 Score Normalization

CAT Normalization Process: The Indian Institutes of Management (IIM), Indore has released the Normalization Procedure of CAT Score on the official website. CAT 2021 is conducted in three sessions. Three different Test Forms shall be administered in three Test Sessions. In order to ensure fairness and equity in comparison of performances of candidates across different test sessions, the scores of candidates shall be subjected to a process of Normalization. The CAT Normalization process shall adjust for location and scale differences of score distributions across different forms. After normalization across different forms, the scores shall be further normalized across different sections. The Scaled Scores obtained by this process shall be converted into percentiles for purposes of shortlisting. For more information about CAT Normalization Process, keep reading this article.

CAT Normalization

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CAT Normalization

For reporting purposes, Scaled Scores for each section (Section I: Verbal Ability and Reading Comprehension (VARC), Section II: Data Interpretation and Logical Reasoning (DILR), and Section III: Quantitative Ability (QA)) and Total along with the Percentiles shall be published. The process of Normalization is an established practice for comparing candidate scores across multiple Test Forms and is similar to those being adopted in other large educational selection tests conducted in India, such as the Graduate Aptitude Test in Engineering (GATE). For normalization across sections, we will use the percentile equivalence.

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Calculation of Scaled Score of a Candidate

The following steps are followed to calculate the scaled score of a candidate in each of the three sections, i.e. VARC, DILR, and QA in CAT 2021. The overall scaled score is obtained by adding scaled scores of these three sections. While illustrating the scaling process, the QA section is chosen as an example. A similar process is valid for the other two sections, i.e. DILR and VARC. Three sessions of CAT examination are expressed as a morning session (8:30 AM – 10:30 AM), afternoon session (12:30 PM – 2:30 PM), and evening session (4:30 PM – 6:30 PM), on November, 2021.

First Step

Calculate the mean and the standard deviation (SD) of the raw scores in the QA section for all candidates appearing in the morning session.

Second Step

Calculate the mean and the standard deviation (SD) of the raw scores in the QA section for all candidates appearing in the afternoon session. Let Mean = M2 and SD = S2 and G2 = M2 + S2.

Third Step

Calculate the mean and the standard deviation (SD) of the raw scores in the QA section for all candidates appearing in the evening session.
Let Mean = M3 and SD = S3 and G3 = M3 + S3.

Fourth Step

Calculate the mean and the standard deviation (SD) of the raw scores in the QA section for all candidates appearing in CAT (i.e. including all three sessions).
Let Mean = M and SD = S and G = M + S.

Fifth Step

Calculate the mean raw score in the QA section of the top 0.1% candidates in the morning session and denote it by 𝑀10.1

Sixth Step

Calculate the mean raw score in QA of top 0.1% candidates in the afternoon session and denote it by 𝑀20.1

Seventh Step

Calculate the mean raw score in QA of top 0.1% candidates in the evening session and denote it by 𝑀30.1

Eighth Step

Calculate the mean raw score in QA of top 0.1% candidates appearing in CAT (i.e. considering all the three sessions) and denote it by 𝑀0.1 Suppose now XYZ is a candidate who appeared in the morning session and her raw score in the QA section is R. Then the scaled score of XYZ in QA.

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Sibaram Sannigrahi

Hi, I am Sibaram Sannigrahi, a content writer at sarkariindiaresults.com. I have experience of more than two years in the education and career field.