JEE Main 2026 — Statistics Question with Solution
JEE Main 2026 (23 January Shift 2)
Question
If the mean and the variance of the data
are and 19 respectively, then the value of is
are and 19 respectively, then the value of is
Choose an option
Show full solutionCorrect option: B
Correct answer
B19
Step-by-step explanation
Class midpoints: .
Frequencies: . .
Mean .
.
Variance: .
Let :
.
, so .
. Hence .
Frequencies: . .
Mean .
.
Variance: .
Let :
.
, so .
. Hence .
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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.