Working with the qualityTools package

This vignette is intended to give a short introduction into the methods of the qualityTools package. The qualityTools package contains methods associated with the Define Measure Analyze Improve and Control (i.e. DMAIC) problem solving cycle of the Six Sigma Quality Management methodology. Usage of these methods is illustrated with the help of artificially created datasets. • Define: Pareto Chart • Measure: Probability and Quantile-Quantile Plots, Process Capability Ratios for various distributions and Gage R&R • Analyze: Pareto Chart, Multi-Vari Chart, Dot Plot • Improve: Full and fractional factorial, response surface, mixture and taguchi designs as well as the desirability approach for simultaneous optimization of more than one response variable. Normal, Pareto and Lenth Plot of effects as well as Interaction Plots