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Course: Statistics and probability > Unit 3
Lesson 6: More on standard deviation- Why we divide by n - 1 in variance
- Simulation showing bias in sample variance
- Simulation providing evidence that (n-1) gives us unbiased estimate
- Unbiased estimate of population variance
- Review and intuition why we divide by n-1 for the unbiased sample variance
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Simulation showing bias in sample variance
Simulation by Peter Collingridge giving us a better understanding of why we divide by (n-1) when calculating the unbiased sample variance. Simulation available at: http://www.khanacademy.org/cs/challenge-unbiased-estimate-of-population-variance/1169428428. Created by Sal Khan.
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