Six Sigma and Process Improvement Flashcards
6 cards from real Manufacturing and Production practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Six Sigma and Process Improvement flashcards as text
What is a regression analysis used for in Six Sigma?
Answer: Identifying and quantifying the relationship between input variables and output outcomes
Regression analysis quantifies how changes in input variables (Xs) affect the output (Y) to guide targeted improvements.
Design of Experiments (DOE) in Six Sigma is used to:
Answer: Systematically test multiple input variable combinations to optimize process outputs
DOE efficiently tests multiple factors simultaneously to identify which variables most significantly affect the process output.
What does DPMO stand for?
Answer: Defects Per Million Opportunities
DPMO normalizes defect rates to a per-million scale, enabling comparison across processes with different complexity levels.
In the Control phase of DMAIC, which tool is most commonly used to sustain improvements?
Answer: Control chart (SPC)
Statistical process control (SPC) charts are placed on the improved process in the Control phase to detect any drift back to old performance.
What is a hypothesis test used for in Six Sigma projects?
Answer: Statistically determining whether observed differences between groups are real or due to chance
Hypothesis tests (like t-tests, ANOVA) validate whether process changes or differences are statistically significant.
What is a 'tollgate review' in a Six Sigma project?
Answer: A structured phase-end review where the project team presents findings to leadership before proceeding
Tollgate reviews ensure each DMAIC phase is properly completed and results validated before the team advances to the next phase.