The sample variance s ² is an unbiased estimator of the population variance s ² when the denominator of s ² is n .

Name: The sample variance s 2 is an unbiased estimator of the population variance s 2 when the denominator of s 2 is n .
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Question

Quizplus · Accepted Answer

The sample variance $s^2$ is an unbiased estimator of the population variance $\sigma^2$ when the denominator of $s^2$ is $n-1$, not $n$, to correct for the bias introduced by estimating the population mean with the sample mean.

The Sample Variance S 2 Is an Unbiased Estimator of the Population

The Sample Variance S ² Is an Unbiased Estimator of the Population