There are several Quality management tools and methodologies used with Six Sigma.
With DMAIC or DMADV project execution, Six Sigma utilizes many more established quality-management tools.

The following are the key methods or Tools used to enhance six sigma.

– 5 Whys [ check next post ]
– Analysis of variance
– ANOVA Gauge R&R
– Axiomatic design
– Business Process Mapping
– Catapult exercise on variability
– Cause & effects diagram (also known as fishbone or Ishikawa diagram)
– Chi-square test of independence and fits
– Control chart
– Correlation
– Cost-benefit analysis
– CTQ tree

– Design of experiments
– Failure mode and effects analysis (FMEA)
– General linear model