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Statistical Test Flowcharts

Statistical test flowcharts are shown below for commonly used tests within Six Sigma DMAIC projects in the ANALYZE phase. It is critical to establish the correct alpha and beta risks and gather the minimum sample size to ensure the power that is necessary. 

If the:

p-value is > alpha-risk, then fail to reject the HO (null hypothesis).

p-value is < alpha-risk, reject the HO and infer the HA (alternative hypothesis).


Parametric Test Flowchart for MeansSix-Sigma-Material.com
Non-Parametric Hypothesis Test Flowchart for MeansSix-Sigma-Material.com
Parametric Hypothesis Tests for VarianceSix-Sigma-Material.com
Parametric Hypothesis Tests for VarianceSix-Sigma-Material.com
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