Week 5: Six Sigma Improve & Controls Phases Practice Questions

Welcome back to the 6 week Six Sigma Green Belt review!

Earlier this week we covered the Improve and Control Phases of DMAIC. We stepped through dozens of related concepts. You can see that here.

We also reviewed what some of the most popular certifying organizations like ASQ, IASSC, and Villanova require you know about these topics.

Today we’re going to review some of the kinds of questions you may be asked on your exam around those topics.

Ready? Let’s dive in!

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ASQ Six Sigma Improve & Control Phases Questions

IASSC Six Sigma Improve & Control Phase Questions

Question: A ____________________ is used to create a model of the affect on an output by the variation in two or more of the inputs.

A) Correlation Coefficient

B) Linear Regression

C) Multiple Regression

D) X-Y Diagram

Answer: Multiple Regression. This is by definition. See multiple regression. Also see, correlation coefficient, linear regression, and x-y diagram.

Question: When doing a graphical analysis of DOE results a Belt frequently uses the Main Effects Plot to determine the relative impact of a variety of inputs on the output of interest. It is easy to identify the most impactful input because the slope of the line on the Main Effects Plot is __________________.

A) The steepest
B) Negatively correlated
C) Positively correlated
D) The shallowest

Answer: The steepest. This is by definition. See article here: Main Effects Plot.

Question: A Belt has used the 5S approach of Lean to set up a control method with frequently used tools organized as shown in this graphic. The Belt has applied the ______________ principle of 5S.Taken from IASSC sample Black Belt exam.)

a) Shining

b) Sorting

c) Straightening

d) Sustaining

Answer: Straightening. This is a straight 5S definition question. See the article on 5s here. Also see Lean Overview.

Question: As a Belt completes a LSS project she creates for the Process Owner a Control Plan. The ________________ portion of the Control Plan details the actions to be taken when the KPI’s indicate they may be moving outside acceptable limits.  

A) Visual Factory

B) Response Plan

C) Readjustment Plan

D) Variance Tracking

Answer: Response plan.   This is a definition question. See Response plan here. Also see Visual Factory, Control Plan.

Question: In the Control Phase of a LSS project a Belt will identify key metrics that can be monitored and analyzed to give an indication that a process may be moving towards an out of spec condition. When he applies this approach he is using __________________.

(A) Poisson Derivatives
(B) Inferential Statistics
(C) Kanban Analysis
(D) Statistical Process Control

Answer: (D) Statistical process control (SPC) is the practice of using statistical methods to understand and control a process. Also see Poisson Derivatives, Inferential Statistics, Kanban

Your Assignment

Assignment for everyone

A reminder that if you want to take these questions yourself you can via my online system. If you haven’t take then baseline exam yet, do so. You can find one available in all of my courses both paid and free.

As great as the baseline practice exams aren’t enough. You need to find more questions. 

Your assignment this week is to find and practice more questions for these topics.

Assignment for PYSSGB Students

If you are a Pass Your Six Sigma Green Belt member, take all of the individual topic quizzes as well as the the cumulative exams for Modules 8 & 9. Let me know what you think. (Want to become a member? Sign up here.)

What Do You Think?

I’d love to know what you think about the material you need to know in these sections. Please take a minute to share your thoughts below. I’ll use these responses to decide the best way to improve the site to help the most number of people.

Next Time

Next week we will dive into the Improve and Control Phases of DMAIC.

I’d love feedback on how you thought the second week went. What was good, what could be better?

Happy studying, Ted