This chapter summarizes the major Hypothesis test used in lean six sigma with a description. Then, you can go to the specific chapter for more information about the specific test.

Normal data

  • One-sample T-test: Comparing a population mean against a given standard when the sample is small (N<30)
  • Two-sample T-test: Comparing means of two different populations when the sample is small (N<30)
  • One-sample variance: Is used to test if the variance of a sample is greater/lower than a specified variance
  • One-Way ANOVA: Comparing the mean of two or more population

Non-Normal data:

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