The mean and variance of \(7\) observations are \(8\) and \(16\) respectively. If two observations are \(6\) and \(8\), …
Q1
The mean and variance of \(7\) observations are \(8\) and \(16\) respectively. If two observations are \(6\) and \(8\), then the variance of the remaining \(5\) observations is:
[JEE Main 2021, 31 Aug (Shift 2)]
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