Basic 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 Basic flashcards as text
Which tool is used in the 'Define' phase to capture the voice of the customer and link it to critical quality characteristics?
Answer: Quality Function Deployment (QFD)
QFD (the House of Quality) translates customer needs (VOC) into measurable technical requirements and critical-to-quality characteristics.
In a hypothesis test, Type II error (β) occurs when:
Answer: A false null hypothesis is failed to be rejected
A Type II error is failing to reject a null hypothesis that is actually false — also called a 'false negative' or missing a real effect.
What does an Ishikawa (fishbone) diagram help identify?
Answer: Potential causes contributing to a specific effect or problem
An Ishikawa diagram organizes potential causes (often grouped as 6Ms) to systematically identify root causes of a problem.
Gauge Repeatability and Reproducibility (GR&R) studies evaluate:
Answer: The capability of a measurement system to produce consistent results
A GR&R study quantifies measurement system variation from repeatability (same operator, same gauge) and reproducibility (different operators) to assess whether the measurement system is adequate.
Which statistical test is appropriate for comparing the means of three or more independent groups?
Answer: One-way ANOVA
One-way ANOVA (Analysis of Variance) tests whether the means of three or more independent groups are statistically equal.
In Six Sigma, 'entitlement' refers to:
Answer: The best short-term performance a process has ever demonstrated
Entitlement is the best short-term performance a process has achieved, representing the theoretical capability without changing the fundamental process design.
A process produces 150 defects across 5,000 units with 3 opportunities per unit. What is the DPMO?
Answer: 10,000
DPMO = (Defects / (Units × Opportunities)) × 1,000,000 = (150 / (5,000 × 3)) × 1,000,000 = 10,000.