Assessment 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 Assessment flashcards as text
During an assessment, a team discovers that operators interpret work instructions differently. Which type of variation does this represent?
Answer: Special cause variation
Different operator interpretations are assignable (special cause) variations that can be identified and eliminated, unlike random common cause variation.
A process assessment reveals a defect rate of 3.4 DPMO. What sigma level does this correspond to?
Answer: 6 Sigma
3.4 DPMO is the benchmark for Six Sigma performance, meaning nearly perfect quality with only 3.4 defects per million opportunities.
What is the purpose of stratification in data collection during a Lean Six Sigma assessment?
Answer: To separate data into subgroups to identify patterns or differences between groups
Stratification breaks data into meaningful subgroups (by shift, machine, operator) so the team can pinpoint which subgroup is driving a problem.
Which assessment activity involves team members observing the actual workplace to see waste and problems firsthand?
Answer: Gemba walk
A Gemba walk involves going to the actual place where work is done to observe processes directly, rather than relying solely on reports or data.
A team assessing a call center process finds that average handle time has increased over the past month. Which chart would best confirm if this is a statistically significant shift?
Answer: Individuals (I-MR) control chart
An Individuals and Moving Range (I-MR) control chart plots time-ordered data with control limits, making it possible to detect statistically significant shifts or trends.
In a Lean Six Sigma assessment, what does 'First Pass Yield' (FPY) measure?
Answer: The percentage of units that complete a process step correctly the first time without rework
FPY measures the proportion of units that pass through a process step without any defect, rework, or scrap on the first attempt.
A Yellow Belt team is assessing the relationship between oven temperature and product hardness. Which tool is most appropriate to evaluate this relationship?
Answer: Scatter diagram
A scatter diagram plots two variables against each other to visually assess whether a correlation exists between them.