Lean Six Sigma Yellow Belt Certification Lean Concepts and Waste 5

Question 1

Which Lean concept focuses on making problems and waste immediately visible so they can be addressed quickly?

Accepted Answer

Visual management

Answer

Visual management uses visual signals, indicators, and displays to make the status of processes and problems immediately apparent to everyone.

Question 2

A call center measures average handle time but never measures the rate of repeat calls for the same issue. Which waste is likely being overlooked?

Accepted Answer

Defects

Answer

Repeat calls indicate a defect — the first interaction failed to resolve the customer's issue, requiring rework in the form of another call.

Question 3

What is the purpose of 'leveling production' (Heijunka) in Lean manufacturing?

Accepted Answer

To smooth out production volume and mix to reduce unevenness and overburden

Answer

Heijunka levels production by distributing work evenly over time, reducing the Mura (unevenness) that causes Muri (overburden) and Muda (waste).

Question 4

A physician always orders a full panel of 20 lab tests for every patient, even when only 3 tests are clinically indicated. This is which type of waste?

Accepted Answer

Extra processing / overproduction

Answer

Ordering unnecessary tests is overproduction and over-processing — providing more service than the customer (patient) needs or benefits from.

Question 5

In Lean, 'continuous flow' means:

Accepted Answer

Processing one unit at a time and passing it immediately to the next step

Answer

Continuous flow (one-piece flow) moves individual units through the process without batching, dramatically reducing lead time and inventory waste.

Lean Six Sigma Yellow Belt Certification Practice Test

Lean Six Sigma Yellow Belt Certification Practice Test

Lean Six Sigma Yellow Belt Certification Lean Concepts and Waste 5