JEE Main 2012 — Statistics Question with Solution
JEE Main 2012 (Offline)
Question
Let be observations, and let be their arithematic mean and be their variance.
Statement : Variance of is .
Statement : Arithmetic mean of is .
Choose an option
Show full solutionCorrect option: D
Correct answer
DStatement is true, statement is false
Step-by-step explanation
Variance of Statement is true.
A.M. of
Statement is false.
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This is a previous-year question from JEE Main 2012, 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.