Understanding the Relationship Between Marks and Percentile Score in IIT JEE Mains: An Explanation with an Example

 The relationship between marks and percentile score in IIT JEE mains is not a fixed value and varies from year to year. The percentile score is a relative measure of a candidate's performance, which indicates the percentage of candidates who scored less than the candidate in the examination. Therefore, the percentile score depends not only on the candidate's marks but also on the marks scored by other candidates.

For example, suppose there are 1,00,000 candidates who appeared for the IIT JEE Mains examination, and a candidate secured 150 marks out of 360. To calculate the percentile score, the candidate's marks are first normalized based on the difficulty level of the examination. Let's assume that the normalization factor for this year's exam is 0.6. Then, the normalized marks for the candidate would be 150 x 100/360 x 0.6 = 25.

Next, the percentile score is calculated based on the number of candidates who scored less than the candidate. Suppose 50,000 candidates scored less than the candidate. Then, the percentile score would be (50,000/1,00,000) x 100 = 50th percentile.

So, in this case, a candidate who scored 150 marks out of 360 would get a percentile score of 50, which means that the candidate performed better than 50% of the candidates who appeared for the exam.

It is important to note that the relationship between marks and percentile score is not fixed and varies from year to year based on the difficulty level of the examination and the performance of other candidates.


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