JEE Main 2026 — Statistics Question with Solution
JEE Main 2026 (04 April Shift 2)
Question
For observations , if and , then their standard deviation is:
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
Given
Also given
Subtracting the second equation from the first:
Substituting this value in the second equation:
The standard deviation is given by:
Answer:
Also given
Subtracting the second equation from the first:
Substituting this value in the second equation:
The standard deviation is given by:
Answer:
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This is a previous-year question from JEE Main 2026, 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.