JEE Main 2019 — Statistics Question with Solution
From: JEE Main 2019 (Online) 9th January Evening Slot
Question
A data consists of n observations : x1, x2, . . . . . . ., xn.
If and
then the standard deviation of this data is :
If and
then the standard deviation of this data is :
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
Performing (1) + (2), we get
Performing (1) (2), we get
S.D()
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This is a previous-year question from JEE Main 2019, 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.