JEE Main 2023 — Statistics Question with Solution
From: JEE Main 2023 (Online) 10th April Morning Shift
Question
If the mean of the frequency distribution
| Class : | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 |
|---|---|---|---|---|---|
| Frequency : | 2 | 3 | 5 | 4 |
is 28, then its variance is __________.
Enter your answer
Show full solutionCorrect answer: 151
Correct answer
151
Step-by-step explanation
Given mean is 28
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This is a previous-year question from JEE Main 2023, 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.