JEE Main 2013 — Statistics Question with Solution
JEE Main 2013 (22 Apr Online)
Question
Mean of 5 observations is 7 . If four of these observations are and one is missing then the variance of all the five observations is :
Choose an option
Show full solutionCorrect option: D
Correct answer
D2
Step-by-step explanation
Let 5 th observation be .
Given mean
Now, Variance
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This is a previous-year question from JEE Main 2013, 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.