DMAIC
DMAIC is the define, measure, analyse, improve and control cycle used in Six Sigma improvement work. Define the problem and customer requirements, measure a reliable baseline, analyse causes, implement and test improvements, then control the process to sustain the result. The stages encourage evidence before action and continued monitoring afterwards. They do not guarantee that an observed association is causal or that an expensive intervention is justified.
Worked example
For invoice errors, define the error rate, measure a baseline, analyse duplicate entry causes, improve the input workflow and control it with monitoring and ownership.
Common mistake
Do not skip reliable measurement or stop after a short successful trial without checking whether the new process remains stable.
Where it appears in your exams
| Qualification | Exam | Relationship | Period |
|---|---|---|---|
| ACCA | APM | Direct | September 2026–June 2027 |