JEE Main 2023 — Statistics Question with Solution
From: JEE Main 2023 (Online) 30th January Morning Shift
Question
The mean and variance of 7 observations are 8 and 16 respectively. If one observation 14 is omitted and a and b are respectively mean and variance of remaining 6 observation, then is equal to ___________.
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Show full solutionCorrect answer: 37
Correct answer
37
Step-by-step explanation
when 14 is omitted
New mean
new variance,
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This is a previous-year question from JEE Main 2023, 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.