Lean Wastes & Tools
41 practice questions with explanations — 15 free to try
PassNova has 41 Lean Six Sigma Yellow Belt practice questions on Lean Wastes & Tools, each with a clear explanation. A 15-question taster is free with no sign-up; the full bank is part of PassNova Premium. Updated for 2026.
Lean Wastes & Tools: example questions & answers
3 worked examples with answers and explanations below. Try 15 Lean Six Sigma Yellow Belt questions free in the browser; the full 41-question Lean Wastes & Tools bank is part of PassNova Premium.
The eight wastes of Lean are commonly remembered by the acronym DOWNTIME. What does the 'D' stand for?
- ADowntime
- BDefects✓
- CDistance
- DDelay
Answer: In the DOWNTIME mnemonic the 'D' stands for Defects, which is work that contains errors and must be reworked or scrapped.
In the DOWNTIME acronym for the eight wastes, what does the 'T' that follows 'N' represent?
- ATiming
- BTransportation✓
- CTeamwork
- DThroughput
Answer: The first 'T' in DOWNTIME stands for Transportation, the unnecessary movement of materials or products between steps.
A Pareto chart is most useful for:
- AIdentifying the 'vital few' causes that account for most of the problem✓
- BMapping the physical flow of materials and people through the factory floor layout
- CDisplaying the correlation between two continuous variables on a scatter plot
- DShowing how a process characteristic changes over time against upper and lower control limits
Answer: A Pareto chart ranks causes by frequency or impact, helping teams focus on the vital few that drive most of the problem (the 80/20 principle).