Without knowing a thing about the population variance,we can expect a randomly selected sample variance (sample variance = SS/df)to equal the population variance on average.

Question

Quizplus · Accepted Answer

The sample variance is an unbiased estimator of the population variance, meaning that on average, the sample variance equals the population variance when the formula sample variance = SS/df (where SS is the sum of squared deviations and df is degrees of freedom) is used.

Without Knowing a Thing About the Population Variance,we Can Expect