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
A data collection check sheet is most valuable because it:
Answer: Provides a structured, consistent format for recording data at the source
Check sheets standardize how data is recorded in real time at the point of occurrence, reducing transcription errors and ensuring completeness.
Which measure of dispersion is most sensitive to extreme values (outliers) in a dataset?
Answer: Range
The range uses only the maximum and minimum values, so a single extreme outlier can dramatically inflate it.
When using an X-bar and R control chart, a 'run of eight' consecutive points on one side of the centerline indicates:
Answer: A potential process shift or special cause requiring investigation
Eight or more consecutive points on one side of the centerline is a non-random pattern signaling a likely process shift, even if all points are within control limits.
The 'voice of the process' (VOP) is best captured using:
Answer: Statistical process control charts and process capability data
SPC charts and capability indices reflect how the process actually performs statistically, representing the voice of the process.
Process cycle efficiency (PCE) is calculated as:
Answer: Value-added time divided by total lead time, expressed as a percentage
PCE measures the proportion of lead time that adds value; a low PCE indicates significant waste in the form of waiting, rework, or transport.
In Lean Six Sigma, 'DPMO' stands for:
Answer: Defects Per Million Opportunities
DPMO normalizes defect rates to a per-million-opportunities scale, enabling fair comparison across processes with different complexity levels.
Which Measure phase activity directly feeds into calculating the baseline sigma level of a process?
Answer: Collecting defect data and counting total defect opportunities
Baseline sigma level is calculated from actual defect counts and the total number of defect opportunities, requiring real process performance data.