The sample variance has the value n in the denominator while the population variance has the value n-1 in the denominator.

Name: The sample variance has the value n in the denominator while the population variance has the value n-1 in the denominator.
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The sample variance typically has $n-1$ in the denominator to correct for bias in estimating the population variance, while the population variance uses $n$ in the denominator.

The Sample Variance Has the Value N in the Denominator