ASQ Certified Quality Process Analyst & Improvement Associate 4 — Questions and Answers
Question 1: In a Value Stream Map, activities that do not add value from the customer's perspective are called:
- Bottlenecks
- Waste (Muda) (Correct answer)
- Takt time contributors
- Push triggers
Correct answer: Waste (Muda)
Muda is the Japanese term for waste — any activity that consumes resources without creating value the customer is willing to pay for.
Question 2: Takt time is calculated as:
- Total units produced divided by number of operators
- Available production time divided by customer demand rate (Correct answer)
- Cycle time minus setup time
- Defect rate multiplied by inspection frequency
Correct answer: Available production time divided by customer demand rate
Takt time = Available production time / Customer demand, representing the pace of production needed to meet customer requirements.
Question 3: When a control chart shows a run of 8 or more consecutive points on one side of the center line, this indicates:
- Natural common cause variation
- A potential special cause that should be investigated (Correct answer)
- The process Cpk has exceeded 1.33
- Measurement system error only
Correct answer: A potential special cause that should be investigated
A run of 8+ points on one side of the centerline is a Western Electric (Nelson) rule violation signaling a non-random pattern and potential special cause.
Question 4: Which quality tool is BEST suited for breaking a broad improvement goal into progressively more detailed and actionable tasks?
- SIPOC diagram
- Tree diagram (systematic diagram) (Correct answer)
- Affinity diagram
- Control chart
Correct answer: Tree diagram (systematic diagram)
A tree diagram systematically breaks a goal or problem into finer levels of detail, showing how high-level objectives translate into specific tasks.
Question 5: Process sigma level is primarily used to express:
- The number of standard deviations in a process's control limits
- A process's defect rate relative to opportunities for error (Correct answer)
- The ratio of process spread to total tolerance
- The average run length before a false alarm on a control chart
Correct answer: A process's defect rate relative to opportunities for error
Sigma level quantifies process performance in defects per million opportunities (DPMO), with Six Sigma equating to ~3.4 DPMO.
Question 6: In the PDCA cycle, what is the primary purpose of the 'Check' phase?
- Identify root causes using statistical tools
- Evaluate results of the implemented change against the plan (Correct answer)
- Standardize and document the improved process
- Define the problem and establish baseline metrics
Correct answer: Evaluate results of the implemented change against the plan
The Check (or Study) phase compares actual results to expected results to determine whether the change achieved its intended effect.
Question 7: A quality auditor finds that a corrective action was implemented but the same nonconformance recurred six months later. This MOST likely indicates:
- The control chart limits were set too tightly
- The corrective action addressed symptoms rather than the root cause (Correct answer)
- The audit was not conducted per the audit schedule
- The process sigma level was overestimated
Correct answer: The corrective action addressed symptoms rather than the root cause
Recurrence of a nonconformance after corrective action strongly suggests the root cause was not truly identified and eliminated.
ASQ Certified Quality Process Analyst & Improvement Associate 4
In a Value Stream Map, activities that do not add value from the customer's perspective are called: