JEE Main 2025 — Statistics Question with Solution
From: JEE Main 2025 (Online) 7th April Morning Shift
Question
The mean and standard deviation of 100 observations are 40 and 5.1 , respectively. By mistake one observation is taken as 50 instead of 40 . If the correct mean and the correct standard deviation are and respectively, then is equal to
Choose an option
Show full solutionCorrect option: C
Correct answer
C449
Step-by-step explanation
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This is a previous-year question from JEE Main 2025, 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.