The sample variance calculated with a divisor of n gives a better estimate of the population variance, $\sigma$², than does the sample variance, s², with a divisor of n - 1.

Question

Quizplus · Accepted Answer

The sample variance calculated with a divisor of n - 1 (s²) gives a better estimate of the population variance (σ2) than does the sample variance calculated with a divisor of n (F1F1F1S1σ2). This is because using the divisor n - 1 corrects for the bias that arises when estimating the population variance from a sample.

The Sample Variance Calculated with a Divisor of N Gives σ\sigmaσ

The Sample Variance Calculated with a Divisor of N Gives $\sigma$