Six Sigma What it is? Complete Tools and Methods

Six Sigma is "a structured methodology to improve business processes that are focused on reducing process variation while reducing defects (products / services that are outside of specification) using the statistical and problem solving tools intensively."

Six Sigma seeks to improve the quality of process outputs by identifying and removing the causes of defects (errors) and minimizing variability in manufacturing and business processes. It uses a set of quality management methods, including statistical methods  and creates a special infrastructure of people within the organization who are experts in these methods.

Six Sigma Methods
DMAIC --> Define, Measure, Analyze, Improve and Control

Define
At this stage, executive team identify problems, define customer's specifications, and setting goals reduction of defect/cost and time targets. 

Measure
Stage to validate the problems, measure/analyze problems of existing data and Collect relevant data

Analyze 
Determine the factors that most influence in process, that means looking for one or two factors which if it will be improved dramatically improve processes.


Improve
Optimize the current process based upon data analysis using techniques such as design of experiment, mistake proofing. discuss ideas to improve our system based on the results of previous analysis, perform an experiment to see results, if good and then made their raw procedure or Standard Operation Procedure (SOP)

Control
At this stage we must make a plan and design the measurement so that the already good results of our team can continuously improve. Control systems are implemented such as statistical process control (SPC), production boards, visual workplaces and the process is continuously monitored