Quality Advisor
A free online reference for statistical process control, process capability analysis, measurement systems analysis,
control chart interpretation, and other quality metrics.
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Formulas and Tables
Variables control charts
Descriptive statistics
- Sigma (estimated and actual)
- Coefficient of variance
- Skewness
- Kurtosis
- Chi-square
- Theoretical percent out-of-spec
- Actual percent out-of-spec
- Target Z with Zupper and Zlower