Well, it seems magic, but magic doesn't matter. Six Sigma has advanced weapons in its arsenal, technically called the lean six sigma. Among the two most used methodologies are the DMAIC and DMADV methodologies. Compare these two methodologies for a better understanding. DMAIC Six Sigma methodologyStarting with the DMAIC Six Sigma methodology, the first thing you should know is the definition, measurement, analysis, improvement, and control. These terms are none other than the various stages of t