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  • #26470

    Dennis Yeo
    Participant

    How can we integrate CMMI with Six Sigma. At which level of CMMI maturity would Six Sigma be most appropriate for integration.
    Should we implement CMMI first then follow by Six Sigma or otherwise.
    Is Six Sigma duplicating CMMI processes since CMMI also have Measurement & Analysis and Causal Analysis & Resolution.

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    #64306

    Greg Willits
    Participant

    I have same questions

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    #64307

    Lingareddy, Pakala
    Participant

    Integrating the Six-Sigma methodologies with CMMI models (Staged and Continuos Representations) can be practiced with DFSS. In actual speaking DFSS is a mechanism of Project Defined Standard Process with Quantitative terms. These quantitative will be elicited from QFD and CTQ parameters of customer needs of the project/system/product/solution.

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    #64308

    Michael Ervick
    Participant

    In my view these are two tools that complement and validate each other very well. 
    If you define quality as “conformance to requirements” and you use Sigma as a measure of how often you conform to requirements, and you use CMMI to define the capabiliy maturity to conform to requirements, then the question is how to best align the two tools. 
    I think I would start by trying to find the bottom of each.  In other words, at what CMMI level or Sigma level will a business fail to fulfill its economic purpose and go out of business.  If, for example, performance below that of a level one CMM means economic death, then it might be equal the a Sigma level of 3.5.
    Just a few thoughts.
     

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    #64309

    Tim Stanbrook
    Member

    Indeed they do complement each other well.
    To answer the original question, Six Sigma most clearly intersects CMMI at Maturity Level 4, Quantitatively Managed.
    I don’t really agree that any kind of correlation between Maturity Levels and absolute Sigma value is appropriate. It’s VOC plus measurements of your existing processes that tells you what Sigma level you need. Higher CMMI maturity levels enables better understanding of improvement opportunities and faster progress implementing them, but doesn’t directly increase Sigma.

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    #64310

    Michael Ervick
    Participant

    Tim is absolutely correct in terms of Six Sigma the quality management methodology. 
     
    I apologize for my thoughts. I was thinking more in terms of sigma the standard deviation or basic probability measurement.  Even a CMM level one will have some degree of predictable success.
     
    Regards,
     
    Michael
     
     

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    #64311

    Gaurav Kataria
    Participant

    Hi guys,
    This is a very interesting topic for in depth study. I am in total aggrement that both the mothodoligies work hand in hand.
    Can someone please provide me with some ppt/pdf/etc on comapisons (similarilies and differences) of CMMI and SixSigma. Benifits of this fusion will be really great!
    Thanks
    Gaurav
    India
     

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    #64312

    Tac
    Member

    Below is a link to a very good article on this topic.
    http://www.stsc.hill.af.mil/crosstalk/2003/09/0309shere.html
     
    TAC

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    #64327

    Monk
    Participant

    Dennis,
    CMMI and Six-Sigma have got different purposes. Though both of these are focused on continuous improvements, CMMI focuses on continual improvement (10% improvement quarter over quarter), where as Six-Sigma is used where breakthrough improvement is expected (atleast 50% improvement).
    Both CMMI and Six-Sigma can exist togehter at the same time. But if your organization already has CMMI level-2 / 3, it can be a good level at which you can think of initiating Six-Sigma at a startegic level. The pain areas identified thorugh your CMMI processes, can be improved using Six-Sigma methodology.
    If you donot CMMI and are planning to introduce Six-Sigma, you may need to look at your measurement system, metrics, and toher basic ground work,, before you initiate Six-Sigma. So you will definately need to spend some time on making the ground level work before initiation. Also training people will also need lot of efforts, as process approach will have to be taught and there will be a bit of resistance from the ground level.
    Lastly, What you can acheive by CMMI in 2 years, Six-Sigma can help you achieve that in 6 months…..but CMMI will be needed to sustain it.
    Monk
     

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    #64333

    Anjali Mogre
    Participant

    Hi
    Six Sigma and CMMI has to go hand in hand. CMMI provides a road map as how to proceed to higher maturity levels while six sigma gives tools and techniques to reach there faster.
    Six sigma projects should be done under the umbrella of CMMI. The results of various six sigma projects should be shared within the organization so that other projects can quickly benefit using the results of the Six sigma projects.
    Six sigma can be be closely related to CMMI – level 4 – Quntitatively Managed Process Area. Each six sigma projects typically falls under the Quantitative Project Managerment.
    Apart from typical software development projects, Six sigma can also be applied to HR, Admin, Finance department to streamline the processes.
    Anjali

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    #64339

    sharma
    Participant

    anjali..anjali….
       just read wt monk has written….try to grasp each word he has written ,
    u r write ..dt these two r supporting each other ….but u have written that ss project done under the umbrella of CMMI ,,..then i must  say that u really underrated  the SS.
    when we talk about the strategy …let me put in that way …
    following SS as a strategy ….or  ….following Strategy as Six Sigma ..there is much difference between these two …though they reflect as same 
    let do some practical evaluation buy putting  CMMI as big umbrella ….n ss under it ..
    1) what will be the scope of ss in that case?
    2) what about the flexibility part in the process , say i don’t to go for implementing CMMI as n step wise rather then i chose few areas at different level , what will be the role of ss project in that case ( what about the dependent event of the process )
    3) How will be SS work in these two model..Stage vs continuous

    anurag
     
     

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    #64349

    Virginia Slavin
    Member

    I’m feeling the need to weigh in here a bit.  I work with CMM and CMMI all the time and have a lot of history there.  I am, however, new to the Six Sigma arena and am enjoying the fact that many of the Six Sigma tools help us to achieve the process improvement desired by using CMMI.  The two methods are very complimentary, however most projects would not know this until they reached Levels 4 or 5 of the maturity models. 
    I noticed a few statements made on this forum that I feel I need to address.  One is that CMMI and Six Sigma are redundant (I’ve paraphrased).  The way I like to present it is you use CMMI (or a comparable standard) when you need to deal with big obvious issues.  The process areas in CMMI are those that the software and systems industry have known for a long time are problem areas and the maturity models purpose was to collect these best practices to help others improve in time tested ways.  For example, I don’t need Six Sigma to tell me that my team is not using configuration management to control their product versions and that this is causing a problem.  (And Yes, this is still a problem with many viable, successful companies) That being said, once the CMMI practices have been adopted and additional improvement is needed in any area, this is an excellent time to pull out your Six Sigma problem solving skills.
    Another question raised was at what level of Six Sigma or CMMI will companies go under?  And fortunately, or unfortunately depending on your perspective, the concepts of improvement models and company success are not really related.  We teach all the time that you can be a really succesful CMMI Level 1 company that doesn’t use Six Sigma.  There were many that were succesful before these concepts even came about.  But if you want to run your company on based on good engineering and management instead of a wing and a prayer, CMMI and Six Sigma would both be excellent ways of doing this.
    I hope this cleared up some of the confusion on this discussion board, and I’ll be happy to continue this topic with anyone that is interested.
    Thanks.
    Virginia

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    #64353

    Smitha
    Member

    Anu,
    I hope the confusion here is because you are looking at SixSigma as a quality standard, framework or model.
    You may go for any quality framework, ISO,CMMI, etc and use SixSigma as a process improvement tool like using 7 QC tools or quality circles.
    If you are working in a CMMI framework (Stage or continous, sixsigma does not bother about it)and any of your process areas is not working well you may use Six Sigma to improve that. Six Sigma most clearly intersects CMMI at Maturity Level 4, as at this level you have enough data to analize. Otherwise, in lower level to initiate a SixSigma project you have to start collecting data.
    Regards,
    Smitha

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