Chapter 4.4, Problem 3LC

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8th Edition

Frederick J Gravetter + 1 other

ISBN: 9781133956570

Textbook Problem

Explain why the formula for sample variance divides *SS* by *n* – 1 instead of dividing by *n*.

To determine

**To explain:** Why the formula for sample variance divides

Explanation

**Justification:**

The necessary correction is that the resulting values will tend to underestimate the population variance. Dividing by a smaller number produces a larger result and makes an accurate and unbiased estimator of population variance...

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