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Learn how to properly implement Process Capability Analysis (Cpk/Ppk) in Minitab, focusing on the critical prerequisites of stability and normality to avoid misleading quality metrics.
Minitab's red non-normality warning in Capability Analysis comes from the Anderson-Darling test (p < 0.05), but small samples, outliers, and mean shifts trip the same flag. This diagnostic guide walks through ordered checks, fixes for each cause, and when to escalate.
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