JEE Main 2020 — Statistics Question with Solution
From: JEE Main 2020 (Online) 3rd September Evening Slot
Question
Let xi
(1 i 10) be ten observations of a
random variable X. If
and
where 0 p R, then the standard deviation of these observations is :
and
where 0 p R, then the standard deviation of these observations is :
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
Standard deviation =
[ Standard deviation is free from shifting of origin.]
[ Standard deviation is free from shifting of origin.]
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This is a previous-year question from JEE Main 2020, 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.