Chapter 4: Variability

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Description

A complete set of lessons covering everything in Chapter 4:

  • Variability explained – first without math
  • Range
  • Variance and Standard Deviation (of a population)
  • Computational formula for Sum of Squares (SS)
  • Variance and Standard Deviation (of a sample)
  • How to understand a Standard Deviation?
  • How changing the data affects the Standard Deviation

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