Trivia Flashcards
7 cards from real Certified Six Sigma Black Belt Exam practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Trivia flashcards as text
The concept of 'Takt Time' in lean manufacturing is calculated as:
Answer: Available production time divided by customer demand rate
Takt time = Available production time ÷ Customer demand rate; it sets the pace of production to match customer demand.
Which Six Sigma chart is most appropriate for monitoring the proportion of defective items in large, variable-sized samples?
Answer: p-chart
The p-chart monitors the proportion (fraction) of defective items in samples of varying size, making it appropriate for attribute data with variable subgroup sizes.
In the context of Six Sigma, 'rolled throughput yield' (RTY) measures:
Answer: Probability that a unit passes through all process steps without any defect
RTY is the product of individual step yields across all process steps — it reflects the true probability of producing a defect-free unit end-to-end without any rework.
Which executive at General Electric is most famous for championing Six Sigma in the 1990s and making it a corporate standard?
Answer: Jack Welch
Jack Welch, GE's CEO from 1981–2001, mandated Six Sigma across all GE businesses in 1995, making it the most visible corporate Six Sigma deployment of the era.
A 'fishbone diagram' is also commonly known as which of the following?
Answer: Cause-and-effect diagram
A fishbone diagram is formally called a cause-and-effect diagram (also an Ishikawa diagram), with the 'fishbone' name coming from its branching visual shape.
In statistical process control, the 'Western Electric Rules' are used to:
Answer: Detect non-random patterns indicating special cause variation
The Western Electric Rules are a set of decision rules applied to control charts to detect non-random patterns that signal special cause (assignable cause) variation beyond just points outside control limits.
What does 'COPQ' stand for in Six Sigma financial analysis?
Answer: Cost of Poor Quality
COPQ — Cost of Poor Quality — quantifies the financial impact of defects, including internal failure costs (scrap, rework), external failure costs (warranties, returns), and appraisal costs.