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Descriptive statistics

Variance and standard deviation

  1. Range, variance and standard deviation as measures of dispersion
  2. Variance of a population
  3. Sample variance
  4. Review and intuition why we divide by n-1 for the unbiased sample variance
  5. Simulation showing bias in sample variance
  6. Unbiased Estimate of Population Variance
  7. Another simulation giving evidence that (n-1) gives us an unbiased estimate of variance
  8. Simulation providing evidence that (n-1) gives us unbiased estimate
  9. Will it converge towards -1?
  10. Sample and population variance
  11. Population standard deviation
  12. Sample standard deviation and bias
  13. Statistics: Standard deviation
  14. Exploring standard deviation 1 module
  15. Exploring standard deviation
  16. Standard deviation of a population
  17. Sample and population standard deviation
  18. Statistics: Alternate variance formulas
Next section:
Sal's old statistics videos