The reason sample variance has a divisor of n − 1 rather than n is that it makes the variance an unbiased estimate of the population variance.

Name: The reason sample variance has a divisor of n − 1 rather than n is that it makes the variance an unbiased estimate of the population variance.
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It has been shown that if you use n instead of n −1, you would not obtain an unbiased estimate of the population variance.

The Reason Sample Variance Has a Divisor of N −