Six Sigma Interview Questions

 Q1. When and by whom was six sigma developed ?

Ans. In 1986 Six Sigma was developed by Motorola.

Q2. Explain six sigma’s purpose.

Ans. Six sigma’s purpose is to identify the causes of defects and errors and then remove them in the manufacturing process.

Q3. What is the symbol of Six sigma ?

Ans. Six Sigma has a greek symbol which is ”sigma”. It is the standard deviation utilized to measure the variation in the process.

Q4. Six sigma uses two key methods. What are they?

Ans. They are DMAIC and DMADV

Q5. What does DMAIC stands for in six sigma ?

Ans. DMAIC is an abbreviation for define, measure, analyze, improve and control.

Q6. What does DMADV stands for in six sigma ?

Ans. DMADV is an abbreviation for define,measure,analyze,develop,verify

Q7. Have you seen Six Sigma jobs being advertised under many titles ?

Ans.Six Sigma jobs are advertised under many titles,not always as obvious as Six Sigma Black Belt,Six Sigma Consultant or Six Sigma Analyst.Other possible titles include things like Functional Project Lead Six Sigma Program Manager,Lead Analyst/Project Manager,Director of Operational Excellence, Business Process Manager or Senior Projects Manager.Whatever the exact title, the organization is looking for someone with the skills of a Six Sigma Black Belt.

Q8. Explain scope of your future in six sigma type job ?

Ans. You need to be able to demonstrate a good understanding of processes and quality methodologies and a willingness to take an initiative and lead change. Another crucial skill is the ability to link strategy to execution.

Q9. Exlain the quality levels of Six sigma ?

Ans. Six Sigma quality levels are 99.9996% accurate and also they have only 3.4 defects per million opportunities.

Q10. Explain key roles in all Six Sigma efforts ?

Ans.  The following are the key roles of Six Sigma efforts:

Sponsor: Business executive leading the organization.

Champion: Responsible for Six Sigma strategy, deployment, and vision.

Process Owner: Owner of the process, product, or service being improved responsible for long-term sustainable gains.

Master Black Belts: Coach black belts expert in all statistical tools.

Black Belts: Work on 3 to 5 $250,000-per-year projects; create $1 million per year in value.

Green Belts: Work with black belt on projects.

Q11. Explain MAIC in six sigma ?

Ans. The following explains the MAIC :

Measure: Problem assessment by gathering right information.

Analyze: Indentify root cause of problem by using statistical tools.

Improve: Solve the problem (not the symptom).

Control: Put a plan in place to make a check that problems stay fixed and sustain the gains.

Q12. How should company integrate lean into six sigma ?

Ans.  Lean takes the waste out of an area six sigma resolves the issue

Q13. Differentiate between load test and performance testing?

Ans. More stress is involved in performance testing, on system and checks whether the system performance is same as the less stress condition. Where as in load testing the stress is kept beyond the limit specified by the client.Performance testing is the super set of load testing. Load testing involves the testing process which determines how well the system is capable for handling concurrent users or the load. Where as performance testing includes the load as well as the stress testing.

Q14. Explain Load testing process ?

Ans. The following steps explains the Load testing process :

Plan the test. A clear test plan is required for ensuring the test scenarios to accomplish the objectives of load testing

Creation of Vusers. Vusers scripts are created that contains the tasks performed by each and every Vuser and all Vuser tasks collectively as a whole.

Creation of scenario. Describing the events that occurred in the testing. This process includes the list machines, scripts, and Vusers which run during the scenario. The Load Runner controller is used for creation of automatic scenarios.

Q15. Mention the list of acceptable number of defects per million corresponding to each Sigma level ?

Ans. Following information mentions the acceptable number of defects per million to correspond to each Sigma level:

Sigma level               Defects per million opportunities

1                                                690,000

2                                                308,527

3                                                66,817

4                                                6,220

5                                                232

6                                                3.4

 Q16. Explain the concept of standard deviation?

Ans. Standard deviation quantifies the variation most accurately indicating the degree of variation in a set of measurement or a process by measuring the average spread of data around the mean. It provides accurate information.

Six sigma is is one of the most important topic in all the interviews related to a Business Analyst.

Please follow and like us:


  1. certainly like your web site however you need to take a look at the spelling on several of your posts. A number of them are rife with spelling problems and I to find it very bothersome to inform the reality on the other hand I will surely come again again.

  2. Great beat ! I would like to apprentice while you amend your web site, how could i subscribe for a blog web site? The account aided me a acceptable deal. I had been tiny bit acquainted of this your broadcast provided bright clear idea

  3. What i do not realize is if truth be told how you are now not actually a lot more well-liked than you might be now. You are so intelligent. You realize therefore significantly relating to this subject, made me in my opinion believe it from numerous various angles. Its like women and men aren’t fascinated except it’s one thing to do with Woman gaga! Your own stuffs nice. All the time deal with it up!

  4. excellent points altogether, you simply received a emblem new reader. What could you recommend in regards to your put up that you made some days in the past? Any positive?

  5. This is very fascinating, You’re an excessively professional blogger. I’ve joined your rss feed and look forward to searching for more of your fantastic post. Additionally, I have shared your web site in my social networks

  6. It’s perfect time to make a few plans for the future and it is time to be happy. I have read this put up and if I may I want to recommend you few fascinating issues or advice. Maybe you could write next articles relating to this article. I desire to learn more issues approximately it!

  7. Good post. I learn something totally new and challenging on blogs I stumbleupon every day. It will always be useful to read through articles from other authors and use a little something from other websites.

  8. Hi there to every body, it’s my first pay a visit of this website; this webpage carries remarkable and actually good material in support of readers.

  9. It’s remarkable to go to see this web page and reading the views of all colleagues regarding this piece of writing, while I am also keen of getting experience.

  10. I’ve read several just right stuff here. Definitely value bookmarking for revisiting. I wonder how a lot effort you place to create such a wonderful informative website.

  11. Hello, i think that i saw you visited my website so i came to “return the favor”.I am attempting to find things to enhance my web site!I suppose its ok to use some of your ideas!!

  12. Уou imply like once we sing reward sonjgs in Church??
    Larгy requested and daddy nodded. ?Properly I can make up a worship song.?
    So Larry jumpеd to his toes and began to make up a track to a very unheaⅼthy tune.
    ?Jesus is so cool. Its fun bеing with God. Hes the funnest God anyone maаy have.?
    Larry sang very badly so Lee had put his fingers over
    his ears.

Leave a Reply

Your email address will not be published.