Lean Six Sigma Black Belt Certification Basic 5

Question 1

Which analysis technique identifies the vital few causes responsible for the majority of defects, based on the 80/20 rule?

Accepted Answer

Pareto analysis

Answer

Pareto analysis applies the 80/20 principle to prioritize the vital few causes (roughly 20%) that account for the majority (roughly 80%) of defects or problems.

Question 2

In a full factorial DOE with 3 factors each at 2 levels, how many experimental runs are required (without replication)?

Accepted Answer

8

Answer

A 2³ full factorial design requires 2³ = 8 experimental runs to test all combinations of 3 factors at 2 levels each.

Question 3

Which Lean concept refers to the rate at which a system must produce to meet customer demand?

Accepted Answer

Takt time

Answer

Takt time = Available production time ÷ Customer demand rate, and it sets the production rhythm needed to satisfy customer demand without over- or under-producing.

Question 4

A Black Belt wants to test if the variance of two independent processes is statistically different. Which test should be used?

Accepted Answer

F-test (Levene's or Bartlett's test)

Answer

The F-test, Levene's test, or Bartlett's test compares the variances of two or more groups to determine if they are statistically different.

Question 5

Which Six Sigma role is typically responsible for removing organizational roadblocks and ensuring resource availability for Black Belt projects?

Accepted Answer

Champion/Sponsor

Answer

Champions or Sponsors are senior leaders who own the business results of Six Sigma projects, remove obstacles, secure resources, and align projects with strategic goals.

Lean Six Sigma Black Belt Certification Practice Test

Lean Six Sigma Black Belt Certification Practice Test

Lean Six Sigma Black Belt Certification Basic 5