Start from your question
15 tools, grouped by the problem you need to solve. Every result is free on screen; tools marked PRO need a Pro plan.
Process stability
Is my process stable and capable?
4 toolsSPC EngineStart hereAll-in-one: variable and attribute charts (p, np, c, u), Cp, Cpk, Pp, PpkAIAG SPCI-MR ChartOne reading per sample (subgroup size 1)AIAG SPCXbar-R ChartSubgroups of 2 to 8 readingsAIAG SPCXbar-S ChartSubgroups of 9 or more readingsAIAG SPC
Not sure which chart? Start with SPC Engine: it picks I-MR, X̄-R or X̄-S from your subgroup size.
Measurement systems
Can I trust my measurements?
1 toolProblem solving
What is driving the problem?
5 toolsDescriptive StatisticsStart here: mean, spread, histogram, normality and confidence intervalsPareto ChartFind the vital few defect causesSimple Linear RegressionOne predictor, ANOVA, residuals, prediction intervalsMultiple Linear RegressionTwo or more predictors, VIF, ANOVADesign of Experiments (Full Factorial)2^k full factorial, effects and coded equation
Sampling
Should I accept this lot?
2 toolsPerformance
How is the line performing?
2 toolsReliability