Statement–I: The mean and variance for first n natural numbers are n +1 2 and n ^ 2 +1 12…
Mathematics · JEE Main · NTA Exams — Statistics and Probability
Statement–I: The mean and variance for first n natural numbers are \(\frac{\mathrm{n}+1}{2} \text { and } \frac{\mathrm{n}^{2}+1}{12},\) respectively.
Statement–II: The mean and variance for first 10 positive multiples of 3 are 16.5 and 74.25, respectively.
Statement–II: The mean and variance for first 10 positive multiples of 3 are 16.5 and 74.25, respectively.
- Only statement I is true
- Only statement II is true
- Both statements are true
- Both statements are false
Answer
(C) Both statements are true
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