Quality Assurance & Improvement Flashcards
7 cards from real LMC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Quality Assurance & Improvement flashcards as text
A factory uses mistake-proofing devices that physically prevent incorrect assembly from occurring. This approach is called:
Answer: Poka-yoke
Poka-yoke refers to error-proofing mechanisms that make it impossible or immediately obvious when a mistake is about to occur.
Which of the following is the BEST indicator that a quality improvement effort has been sustained over time?
Answer: Consistent process performance within control limits months after improvement
Sustained improvement is demonstrated by consistently meeting quality targets over an extended period after the improvement initiative ends.
In Lean, the concept of 'genchi genbutsu' (go and see) directly supports quality improvement by:
Answer: Ensuring decisions are based on firsthand observation at the actual workplace
Genchi genbutsu means going to the actual place to observe the actual situation, ensuring quality decisions are grounded in reality.
A Six Sigma Black Belt reports a process operating at 4-sigma. Approximately what DPMO (defects per million opportunities) does this represent?
Answer: 6,210 DPMO
A 4-sigma process yields approximately 6,210 DPMO, compared to 3.4 DPMO at Six Sigma (6-sigma) level.
A quality improvement team discovers that a defect only occurs when a specific operator is on shift. The 5-Why analysis should next focus on:
Answer: Investigating differences in the operator's method, training, or tools vs. standard work
Operator-specific defects point to method, training, or tool differences; 5-Why should explore these to identify the systemic root cause.
Which quality improvement approach uses a structured A3 report to document problem-solving from problem statement through countermeasures and follow-up?
Answer: Toyota's A3 thinking process
The A3 process, named after the paper size, provides a structured, single-page framework for Lean problem-solving and continuous improvement.
When a Lean team sets a quality improvement target, the target should be:
Answer: Based on customer requirements and current process data, with a realistic improvement timeline
Effective quality targets balance customer expectations with process data and allow realistic improvement timelines to maintain team engagement.