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 chart is most appropriate for monitoring the proportion of defective items in a process with variable subgroup sizes?
Answer: p-chart
The p-chart monitors the proportion of nonconforming items and accommodates variable subgroup sizes, unlike the np-chart which requires constant subgroup size.
The concept of 'transfer function' in Six Sigma (Y = f(X)) means:
Answer: Output quality is a function of input and process variables
The transfer function Y = f(X) expresses that process outputs (Y) are determined by input variables and process factors (Xs), guiding teams to control the inputs to improve the output.
What is the purpose of a Measurement System Analysis (MSA) before collecting process data?
Answer: To ensure the measurement system's variation is acceptable relative to total variation
MSA verifies that measurement system variation is small enough relative to process variation and tolerances so that collected data accurately reflects the true process.
In Design of Experiments (DOE), a 'full factorial' design means:
Answer: All possible combinations of factor levels are tested
A full factorial design tests every combination of all factor levels, allowing estimation of all main effects and all interactions.
What does 'Cpk' measure that 'Cp' does not?
Answer: The actual process centering relative to the nearest specification limit
Cpk adjusts for process centering by measuring the distance from the process mean to the nearest specification limit, penalizing off-centered processes unlike Cp.
Which lean concept focuses on eliminating the 'waiting' waste by ensuring each process step is ready when the previous step completes?
Answer: Just-in-Time (JIT)
Just-in-Time (JIT) aims to produce and deliver the right items at the right time in the right quantity, eliminating waiting and inventory waste.
A scatter diagram showing a positive correlation between two variables indicates:
Answer: As one variable increases, the other tends to increase as well
A positive correlation means the two variables tend to increase together, but correlation does not imply causation without further analysis.