Mathematics · 2026
JEE Main · 8 April 2026, Shift 2 · Q7
A set of four observations has mean 1 and variance 13. Another set of six observations has mean 2 and variance 1. Then, the variance of all these 10…
A set of four observations has mean $\displaystyle 1$ and variance 13. Another set of six observations has mean $\displaystyle 2$ and variance 1. Then, the variance of all these $\displaystyle 10$ observations is equal to :
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle 6.04$
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JEE Main 2026 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.