The DMAIC Cycle
40 free practice questions with explanations
PassNova has 40 free Lean Six Sigma Yellow Belt practice questions on The DMAIC Cycle, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.
The DMAIC Cycle: example questions & answers
Here are 6 example questions from this topic. Practise the full set of 40 free in the browser.
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What does the acronym DMAIC stand for in Six Sigma?
- A Determine, Measure, Act, Improve, Confirm
- B Design, Measure, Analyse, Improve, Control
- C Define, Measure, Analyse, Improve, Control ✓
- D Define, Model, Assess, Implement, Check
Answer: DMAIC is the core Six Sigma improvement framework: Define, Measure, Analyse, Improve, and Control.
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Which phase of DMAIC focuses on collecting baseline data to quantify current process performance?
- A Control
- B Define
- C Measure ✓
- D Analyse
Answer: The Measure phase establishes a reliable baseline by collecting data on current process performance.
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What does the 'M' in the DMAIC 'Measure' phase NOT typically involve?
- A Validating the measurement system
- B Collecting baseline data
- C Implementing the final control plan ✓
- D Mapping the detailed process
Answer: Implementing the final control plan belongs to the Control phase; Measure focuses on baselining performance and validating data.
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Which sequence correctly orders the DMAIC phases?
- A Define, Analyse, Measure, Improve, Control
- B Define, Measure, Analyse, Improve, Control ✓
- C Define, Measure, Improve, Analyse, Control
- D Measure, Define, Analyse, Control, Improve
Answer: The correct order is Define, then Measure, then Analyse, then Improve, then Control.
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In the Control phase of DMAIC, a key objective is to:
- A Identify the root cause of the problem
- B Sustain the gains and prevent the process from reverting ✓
- C Write the original problem statement
- D Brainstorm potential solutions
Answer: The Control phase locks in improvements with monitoring and standard procedures so the process does not slip back to its old state.
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In the Control phase, a control chart is mainly used to:
- A Rank causes from most to least frequent
- B Distinguish common-cause variation from special-cause variation over time ✓
- C Show the steps in a process as a flowchart
- D Calculate the project return on investment
Answer: Control charts plot data over time with control limits to separate normal common-cause variation from special-cause signals, helping sustain the improved process.