Mathematics · 2025
JEE Main · 3 April 2025, Shift 2 · Q9
Let the Mean and Variance of five observations x_1=1, x_2=3, x_3=a, x_4=7 and x_5=b, a>b, be 5 and 10 respectively. Then the Variance of the…
Let the Mean and Variance of five observations $\displaystyle x_1=1, x_2=3, x_3=a, x_4=7$ and $\displaystyle x_5=b, a>b$, be $\displaystyle 5$ and $\displaystyle 10$ respectively. Then the Variance of the observations $\displaystyle n+x_n, n=1,2, \ldots ., 5$ is
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle 16$
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