Lean Six Sigma Green Belt Certification Lean Principles and Waste 3

Question 1

Which waste type occurs when a finished product must be reworked because it failed an inspection?

Accepted Answer

Defects

Answer

Defects waste includes any rework, scrap, or correction required because a product did not meet quality standards the first time.

Question 2

A Lean practitioner maps a process and finds that 85% of lead time is spent waiting for approval signatures. Which improvement should be prioritized?

Accepted Answer

Eliminate the waiting waste by streamlining approvals

Answer

Waiting waste accounts for 85% of lead time here, so streamlining or automating approval steps will deliver the greatest cycle time reduction.

Question 3

In Lean, which term describes the rate at which products must be completed to meet customer demand?

Accepted Answer

Takt time

Answer

Takt time is calculated as available production time divided by customer demand rate, setting the pace for production to avoid over- or under-production.

Question 4

Which of the 5 Lean principles focuses on ensuring that each step in the process flows into the next without interruption or delay?

Accepted Answer

Create Flow

Answer

The 'Create Flow' principle aims to eliminate interruptions, queues, and batches so work moves continuously through the value stream.

Question 5

A hospital moves patient records from nursing to billing through three separate departments before processing. This is an example of which waste?

Accepted Answer

Transportation

Answer

Transportation waste involves the unnecessary movement of materials, information, or products — in this case, patient records passed through multiple departments.

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Lean Principles and Waste 3