Measure Phase Tools Flashcards
7 cards from real Lean Six Sigma Yellow Belt Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Measure Phase Tools flashcards as text
When a process has a Cpk value significantly lower than its Cp value, this indicates that the process:
Answer: Is not centered between the specification limits
Cpk accounts for process centering; a Cpk much lower than Cp signals the process mean is shifted toward one of the specification limits.
Which of the following best describes 'common cause variation' in a process?
Answer: Random, inherent variation present in every stable process
Common cause variation is the natural, predictable noise in a stable process and can only be reduced by changing the process itself.
A process map differs from a SIPOC because it:
Answer: Shows detailed, step-by-step activities including decision points and loops
A process map (flowchart) captures granular steps, decisions, and flow paths, providing far more detail than the high-level SIPOC overview.
In a data collection plan, 'stratification' means:
Answer: Grouping data by category (e.g., shift, machine) to reveal hidden patterns
Stratification splits data into meaningful subgroups so that differences between groups — not just overall averages — can be detected.
What does 'percent gage R&R' measure in a measurement system analysis?
Answer: The percentage of total observed variation attributable to the measurement system
Percent Gage R&R quantifies how much of the total study variation comes from the measurement system versus actual part-to-part variation.
Which statistical measure best describes the central tendency of a data set that contains significant outliers?
Answer: Median
The median is resistant to outliers because it reflects the middle value regardless of extreme high or low values, unlike the mean.
In a cause-and-effect (fishbone) diagram, the 'bones' typically represent categories such as:
Answer: Man, Machine, Method, Material, Measurement, and Environment
The classic 6M categories on a fishbone diagram organize potential root causes into Man, Machine, Method, Material, Measurement, and Environment.