Since s² gives an unbiased estimate of σ², s gives an unbiased estimate of σ.

Name: Since s 2 gives an unbiased estimate of σ 2 , s gives an unbiased estimate of σ.
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Quizplus · Accepted Answer

The notation seems to be a mix-up or incorrectly formatted, but generally, $s$ (the sample standard deviation) does not give an unbiased estimate of $\sigma$ (the population standard deviation). To estimate $\sigma$ unbiasedly, a correction factor is typically applied to $s$.

Since S2 Gives an Unbiased Estimate of σ2, S Gives

Since S² Gives an Unbiased Estimate of σ², S Gives