Business process guide
Six Sigma and DMAIC for Business Processes
Six Sigma is most useful when a process has measurable performance and a recurring quality or variation problem.
Practical note: process design depends on organization, data, controls, laws, contracts and technology. Treat examples and calculators as educational planning aids, then validate changes against your own requirements.
Define and measure
Clarify the customer-critical outcome, process boundaries and current performance before searching for causes.
Analyze causes
Use data and process knowledge to distinguish factors associated with defects from assumptions or anecdotes.
Control the improved process
New procedures, measures, ownership and monitoring help prevent the old condition from returning.