Lean Six Sigma Green Belt Certification Lean Principles and Waste 5

Question 1

Which Lean concept refers to leveling the production schedule to smooth out volume and mix variations over time?

Accepted Answer

Heijunka

Answer

Heijunka is the Lean practice of production leveling — distributing work evenly over time to avoid peaks and valleys that create waste and stress.

Question 2

When a Green Belt calculates process efficiency on a value stream map, what ratio is being computed?

Accepted Answer

Value-added time divided by total lead time

Answer

Process efficiency (or process cycle efficiency) is the ratio of value-added time to total lead time, often expressed as a percentage to highlight waste.

Question 3

A service team discovers they are entering the same customer data into three separate systems. Which waste type does this represent?

Accepted Answer

Over-processing

Answer

Redundant data entry across multiple systems is over-processing waste — performing more steps than necessary to deliver the required output.

Question 4

Which of the following Lean principles must be established before a pull system can function effectively?

Accepted Answer

Create flow

Answer

Flow must be established before pull can work — without continuous, uninterrupted flow, downstream signals cannot reliably pace upstream production.

Question 5

In a transactional process, which of the following is MOST likely classified as waiting waste?

Accepted Answer

A loan application sitting in a queue for 3 days awaiting underwriter review

Answer

A loan application sitting idle while awaiting review is classic waiting waste — work that is complete on one end but cannot proceed because a resource is unavailable.

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 5