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TQM V.S. Six Sigma

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  • #26926

    william wang
    Member

    What is the relationship between TQM and Six Sigma? Someone said Six Sigma is a part of TQM, someone said Six Sigma is totally different from TQM.

    Thanks and best regards
    William

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    #65476

    Amanda
    Participant

    TQM and Six Sigma are two pupils of the same school. They are similar in many ways and different in many ways. Let me elaborate on what I know (which shouldn’t take very long!).

    Tools are the same. You use the same 9(?) basic tools as well as a host of statistical tests. Some may be tailored differently and a few new ones may be introduced by Six Sigma.

    Methodologies are similar but Six Sigma has caught on because it is more focused on delivering what business leaders want: Numbers and profits instead of “we feel the process is much stronger now.” It was the quantification that was lacking with TQM. Although it worked in many places, the business leaders couldn’t get into it and understand the benefits clearly enough.

    ;) Amanda

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    #65486

    Yue
    Member

    i think except the similar tools and the clearer (digital) target, six sigma has a interesting model of organisation–black belt and green belt.

    PS.: what are the 9 basic tools?

    yue

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    #65501

    Chaser
    Participant

    The nine basic tools (I think) are:

    FMEA
    QFD
    DOE
    Fishbone (Cause & Effect)
    Process Mapping
    Pareto
    Gage R&R
    Control Charts
    & One more I can’t remember…

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    #65505

    Simon Wei
    Member

    The seven basic tools for TQM are:

    1 cause and effect diagrams
    2 flow charts/process flow diagrams
    3 pareto charts
    4 run charts
    5 histograms
    6 scatter diagrams
    7 control charts

    There are significant differences between TQM and Six Sigma — just looking at the tools — aren’t there? It would appear that with the addition of FMEA, DOE, and others that Six Sigma is much more powerful than TQM.

    Simon

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    #65517

    howe
    Participant

    What ever happened to the ANALYZE Phase? Niether of you has mentioned the basis for finding the “Vital X’s”…Hypothesis Testing/ANOVA…clear, concise answers!

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    #65533

    Anonymous
    Participant

    I would recommend to read the chapter 3 of “The Six Sigma Way, How GE, Motorola and other Top companies are Honing their Performance”, there the authors analize the “pitfalls” of TQM and Six sigma “solutions”.
    I do not agree at all related to the analysis but as a reference is good.

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