JEE Main 2013 — Statistics Question with Solution
JEE Main 2013 (07 Apr)
Question
All the students of a class performed poorly in Mathematics. The teacher decided to give grace marks of to each of the students. Which of the following statistical measures will not change even after the grace marks were given ?
Choose an option
Show full solutionCorrect option: B
Correct answer
Bvariance
Step-by-step explanation
As we know that with the change in origin, the variance does not change.
Therefore, variance does not change even after giving grace marks of to each of the students.
Whereas, mean, mode and median changes upon changing the origin.
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This is a previous-year question from JEE Main 2013, covering the Statistics chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.