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

question 107

Multiple Choice

The sample variance s ² is an unbiased estimator of the population variance $? ^ { 2 }$
when the denominator of s ² is:

• A) n + 2.
• B) n + 1.
• C) n.
• D) n - 1.

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