DMAIC (Define, Measure, Analyze, Improve, Control) is a Six Sigma methodology for process improvement, with each phase serving a specific purpose.
Option A (Measure): The Measure phase collects baseline data to understand current performance, not sustain improvements.
Option B (Analyze): The Analyze phase identifies root causes, not focused on sustaining new processes.
Option C (Improve): The Improve phase implements solutions, but does not ensure long-term sustainability.
Option D (Control): This is the correct answer. The NAHQ CPHQ study guide states, “The Control phase of DMAIC establishes monitoring systems and standardizes processes to sustain improvements over time” (Domain 4). Tools like control charts and standard operating procedures ensure performance is maintained.
CPHQ Objective Reference: Domain 4: Performance and Process Improvement, Objective 4.3, “Use structured improvement methodologies,” includes DMAIC’s Control phase for sustainability. The NAHQ study guide notes, “Control ensures improvements are sustained through ongoing monitoring and standardization” (Domain 4).
Rationale: The Control phase is designed to maintain process performance, aligning with CPHQ’s focus on sustainable improvement.
[Reference: NAHQ CPHQ Study Guide, Domain 4: Performance and Process Improvement, Objective 4.3., , , ]
