A set of four observations has mean \(1\) and variance \(13\). Another set of six observations has mean \(2\) and varian…
Q1
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 \(10\) observations is equal to:
[JEE Main 2026, 8 Apr (Shift 2)]
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