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JEE MATHEMATICS MCQ: STATISTICS

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The mean and variance for first

{n}

natural numbers are respectively

View answer and explanation

Correct option: A

Mean

=\frac{n+1}{2}

, variance

=\frac{n^2-1}{12}

Option A (Mean =

\frac{{n+1}}{{2}}

, variance =

\frac{{n^2-1}}{{12}}

) is correct because it uses the standard formulas for the mean and variance of the first n natural numbers.

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