Friday, March 15, 2013

Common Admission Test (CAT) 2012 Score Analysis

    After having aced Common Admission Test (99.97 %ile) \m/ and having completed almost all my interviews, I have decided to consolidate my analysis of CAT 2012 result and post it for future aspirants. As pointless as this analysis is for improving one’s prospects, it surely helps the ‘analytical’, ‘inquisitive’ minds to understand the beast called CAT a little better. The following research has been done with the help of information from the internet, especially

    To start with, let us look at a simple graph between CAT score and percentile. The maximum marks for CAT 2012 and all previous online CATs have been 450. One of the 100 %iler scored 367. I scored 348 for my percentile of 99.97.

    It is also interesting to see how the scores vary section-wise. From the below graph it is obvious that Quantitative Analysis and Data Interpretation (QA & DI) section is more scoring that Verbal Analysis and Logical Reasoning (VA  & LR) section. The scores are known to rise very steeply as the % ile touches 100 for each section. However, I don't have the data to show it.

    Since most of the mock tests that we take for CAT are out of 180 (90 + 90), I have scaled the scores down to give a total out of 180. I will call this the raw score.
Assumption Alert – In scaling down, I have totally ignored the devil called normalization. As you read further, you will realize that normalization is really a game changer. Normalization is a black box and the only way to deal with it is to ignore it. And pray.

    The following table is something I am the most proud of. It will try to tell you how many questions you need to get correct to get a certain percentile. I have continued with my assumption that Normalisation is like unicorns -> it doesn’t exist. And I will repeat again -> My assumption isn’t all that true.
For Eg – If you have attempted 55 questions and want to get 99.8 percentile, you should get at least 46 questions correct.  That means an accuracy of ~84%.

As you see in the table above, couple of correct questions separate a 99.0 from a 99.7. Also, for the same number of correct questions, your percentile can lie in a big bracket. This means that where you lie in the bracket depends upon how your scores get normalized.

Feel free to comment and discuss this further. Happy to help.

Other Relevant Posts: 

IIM Ahmedabad WAT & Personal Interview Experience

Follow sushantkoshy on Twitter