JEE Main 2022 — Statistics Question with Solution
From: JEE Main 2022 (Online) 28th June Evening Shift
Question
Suppose a class has 7 students. The average marks of these students in the mathematics examination is 62, and their variance is 20. A student fails in the examination if he/she gets less than 50 marks, then in worst case, the number of students can fail is _________.
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Show full solutionCorrect answer: 1
Step-by-step explanation
According to given data
So for any xi,
So no student is going to score less than 50.
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This is a previous-year question from JEE Main 2022, 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.