Lean Principles and Waste Flashcards
7 cards from real Lean Six Sigma Green 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 Lean Principles and Waste flashcards as text
Which waste type occurs when a finished product must be reworked because it failed an inspection?
Answer: Defects
Defects waste includes any rework, scrap, or correction required because a product did not meet quality standards the first time.
A Lean practitioner maps a process and finds that 85% of lead time is spent waiting for approval signatures. Which improvement should be prioritized?
Answer: Eliminate the waiting waste by streamlining approvals
Waiting waste accounts for 85% of lead time here, so streamlining or automating approval steps will deliver the greatest cycle time reduction.
In Lean, which term describes the rate at which products must be completed to meet customer demand?
Answer: Takt time
Takt time is calculated as available production time divided by customer demand rate, setting the pace for production to avoid over- or under-production.
Which of the 5 Lean principles focuses on ensuring that each step in the process flows into the next without interruption or delay?
Answer: Create Flow
The 'Create Flow' principle aims to eliminate interruptions, queues, and batches so work moves continuously through the value stream.
A hospital moves patient records from nursing to billing through three separate departments before processing. This is an example of which waste?
Answer: Transportation
Transportation waste involves the unnecessary movement of materials, information, or products — in this case, patient records passed through multiple departments.
Which Lean tool is specifically designed to provide a visual representation of all value-added and non-value-added steps in a process?
Answer: Value stream map
A value stream map visually depicts every process step, information flow, and timeline, highlighting value-added vs. non-value-added activities.
Which type of non-value-added activity is considered 'necessary' in Lean and should be minimized rather than immediately eliminated?
Answer: Regulatory compliance inspections
Regulatory compliance inspections are non-value-added but necessary; they cannot be eliminated without violating requirements, so they should be minimized instead.