JEE Mains · Maths · STD 11 - 13. statistics
Let \(\mathrm{n}\) be an odd natural number such that the variance of \(1,2,3,4, \ldots, \mathrm{n}\) is \(14 .\) Then \(\mathrm{n}\) is equal to ..... .
- A \(12\)
- B \(13\)
- C \(23\)
- D \(26\)
Answer & Solution
Correct Answer
(B) \(13\)
Step-by-step Solution
Detailed explanation
\(\frac{\mathrm{n}^{2}-1}{12}=14 \Rightarrow \mathrm{n}=13\)
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