iSixSigma

Black Belt Tools and Techniques

Six Sigma – iSixSigma Forums Old Forums General Black Belt Tools and Techniques

This topic contains 16 replies, has 15 voices, and was last updated by  BB 13 years, 8 months ago.

Viewing 17 posts - 1 through 17 (of 17 total)
  • Author
    Posts
  • #42440

    lin
    Participant

    Hello All,
    There are many tools that are taught in the Six Sigma methodology, but I have never seen any real information on the ones that are used the most.  For example, if you have Minitab, there lots of things it can do: basic stats, ANOVA, SPC,etc.  But, I would imagine that the frequency of tool use probably follows a Pareto type relationship.
    So, my question to all you black belts, what are the tools you use the most?  And do you think it follows the 80/20 rule?
    Thanks.

    0
    #133977

    Mr IAM
    Participant

    Bill,  I do think it follows the 80/20 rule.
    In typicall BB training you learn a “butt-load” of hypothesis tests – at least 20 different test between Z, T, paired T, F, Levene’s, 1-way, 2-way ANOVA, Moods, Kruskal, Chi – etc… The list goes on.
    For Hypothesis testing I find myself using F, ANOVA, Chi-Square, and Moods Median the most.
    Tons of time is spent on teachind DOE in BB training.  But, many projects never need the tool.
    But, there are some tools I use on almost every project.  Cause and Effect Matrix, Pareto Chart, Run Chart, Capability Analysis, FMEA, Control Plans, ANOVA/Moods.
    I think 80/20 applies to the tool sets – if not for anything else then once you get used to certian tools you like, you use them – even if it may not be 100% the best choice.  For instance earlier today I learned I should have applied a Fishers Exact test when I would have used a Chi-Square test (thanks BTDT).
    Cheers!

    0
    #133979

    thevillageidiot
    Member

    Sure….the skill set is designed to be systematic and based on data type. Hence, you can easily form patterns of use.  For example, I was taught to use continuous data whenever possible, my MBB would insist on it.  As a result, I like to use ANOVAs and Scatter plots / Correlation Coefficients as well as Cpk, while my Chi Sq and sigma calculation skills are weak.   
    Ideally, you would have the full arsenal at your disposal…for me, and I suspect most practicianers, you use something close to the 80/20 based on the nature of the data type and distributions.  I personally don’t think this is a bad thing…..a check-list style of “If-then” tools works very well when you are first beginning.  Good luck.

    0
    #133986

    doubt
    Participant

    To All : Are that tools good for samples and populations ? Which are the stat tools to use, if I have all population data always available in real time (full automatic line) ?
    Thank you for any help.

    0
    #134322

    ProcessDoctor
    Participant

    I agree with the general assessment that our BB tool usage tends to follow Pareto’s principle.  I think it’s more of a comfort level thing in that we become accustomed to using particular tools and we tend to use them regardless of whether they are the most ideally suited for the task at hand.  After all, we are graded on our results, not the processes used to produce those results.
    In regards to your check-list idea, that is exactly what I have been trying to find.  Do you have, or know of where I can find a check-list of “If/then” tools for 6-sigma?  This would save a lot of time “searching” for the ‘right’ tool to use. 
    Thanks,

    0
    #134326

    BBPT
    Participant

    Hi, process doctor
    I believe I have that kind of check list.
    Please post your email and I will send to you. But only tomorrow!
    best regards,
     
    BBPT
     

    0
    #134328

    MasterBlb
    Participant

    Its been my experience that the tools used will vary from BB to BB or GB, depending on the kinds of data available in the process being managed.  Mined discrete data will require a different set of tools than continuous data from a manufacturing process. The existence or lack of automation in data collection will play a role. I would suggest that the Pareto of tools used by all BB’s and GB’s would be more flat than sloped.  But a good guideline for tool types is:
    1)  Some kind of measurement quality analysis method.
    2)  Some means for characterizing the process output (reporting capability)
    3)  Some means for determining difference or significance of relationship (i.e., ANOVA; Hypothesis tests; Confidence Intervals; Proportion Testing)
    4)  The Seven Basic Tools( Pareto; Structure Trees or Fishbones; XY Plots; Brainstorming; Data Collection Tools; Flow Charts and Histograms) will be among the most popular.  They are easy to use and are easily understood in the workplace.
    Some consistent means for solution selection and project planning to manage through project problems and “finish the project”.  Kepner Tregoe provided a sound process for doing this years ago.  It still works and can be useful in Six Sigma.  It probably won’t be significant in any Pareto though.
    Good Luck

    0
    #134330

    BH
    Participant

    BBPT – I would like a copy of your check list

    0
    #134332

    ProcessDoctor
    Participant

    Thanks BBPT,
    You can e-mail me at toddri@us.panasonic.com
    ProcessDoctor

    0
    #134623

    Jonathon Andell
    Participant

    There should be a set of tools used on just about every project, and some tools brought out specifically when called for in context. I suppose that could work a bit like an 80/20 rule.

    0
    #134657

    KRISHNANKUTTY
    Participant

    Hi, most of the time, the following tools are used in six sigma.
    Business process FMEA
    Manufacturing process FMEA
    MSA
    SPC
    Paired Comparison
    Component Search
    Variable search
    Process/Product parameter search
    Full factorial
    Test cause validation
    As you have rightly mentioned, ANOVA etc are very rearely used tools, in my experience.

    0
    #134659

    Dan the Kan Man
    Participant

    Man,
    Looks like you come from the SKOSSBNR camp (Shainin kind of Six Sigma but not really).
    How is it that DOE is used without ANOVA?

    0
    #134862

    pt
    Participant

    Bh, how can I send you this ckeck-list.
    Please post your email.
     

    0
    #134863

    Paulo Franco
    Participant

    BBPT,
    Hi!
    I would like to receive the Check List.
    Best regards,
    Paulo Franco  vitorelli.franco@uol.com.br
     

    0
    #134864

    greenhorn
    Participant

    Hi BBPT, can you also send me your checklist.  Thank you very much.
    alvin_villegas@pldtdsl.net

    0
    #134892

    lin
    Participant

    My email address is bilyh@aol.com.
     
    Thanks

    0
    #134927

    BB
    Participant

    I would also likea copy of your checklist, please send it to morgan_jones6@hotmail.com

    0
Viewing 17 posts - 1 through 17 (of 17 total)

The forum ‘General’ is closed to new topics and replies.