iSixSigma

Bart

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Viewing 39 posts - 1 through 39 (of 39 total)
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  • #181683

    Bart
    Participant

    I tried to search first, so that is why I am digging up an old thread. 
    Mine is a very similar issue to the above.  I am trying to do an MSA on the balancers, though.  We do not correct the imbalance, but are simply measuring it. 
    We can easily quantify the bias of a given balancer by using cartesian coordinates, but R&R seems to have me a bit stymied.  I can do an MSA on either magnitude OR angle (though I am not sure angle works very well) OR catesian X OR cartisian Y.  Should I do two and marry them back together?  How? 
    Thanks for any feedback!
    -Bart

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    #176220

    Bart
    Participant

    Hey Scott,
    Some things to take into account:
    If this is the first initative on Lean transformation in your company. Then a crucial question is: “how is the management support organised?”
    Is each plant asking “pick me”, or is each plant saying “oh no, please don’t pick us”. If you got the challenge to prove that Lean is the approach which needs to be implemented to make a next step, but you don’t have the management support from all plants, then you have an issue.
    It is also important to know if you are the person who is going to implement the Lean transformation, or if you are asking external support / other internal people to help in this matter. Why? Well if you need to implement it from a remote distance (e.g. oversea) then it will be very hard.
    For the moment final important question: do you know plants where there are already Lean believers, who can help you in this challenge? This can help you al lot to make first visual improvement steps. They become your supporters to also convince the other plants to go this way.
    So summary:
    1. You need a plant with strong management support
    2. The plant must be easy accessable for the lean transformation drivers
    3. The plant needs some strong believers to deliver first evidence (low-hanging-fruit) to get the ball rolling.
    As you see, in such an initiative I would not look to the short-term gain of easy money, but to the long-term gain of a total organisational drive towards LEAN.
    Hope this helps you.

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    #175887

    Bart
    Participant

    Well, did nobody remember this webinar on “Six sigma salary data”. Find all the answers on your questions below:
    By Michael MarxFor those of you that joined us for the Six Sigma Salary Webcast in March you saw the software we used to analyze the data. The application was made available for free download so you could test-drive running analysis on your own.I’m happy to announce that the sample iSixSigma salary data is now available for your slicing and dicing pleasure in the Spotfire Web Player, a free web based application that lets you play with the data without downloading the software.iSixSigma Salary Data in Spotfire Web PlayerNot only can you view the iSixSigma Salary data, but Spotfire has built a host of other entertaining applications as well. From Sports to politics, you can find one to suit you.As an end note, if you missed the webcast live, it is still available to watch online. You can also still download the trial of Spotfire with the Salary Data included…http://www.sixsigmacompanies.com/archive/six_sigma_salary_data_in_spotfire_web_player.html
     
     

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    #175758

    Bart
    Participant

    In my previous job I was appointed as “the person to take up the new coorporate DFSS iniative, for our plant”.
    At the beginning I was feeling the same: “how do I start”.
    From each plant a person was appointed to step into the Black Belt training. Coached by an already experienced Master Black Belt. In the beginning it was difficult to get started, mainly because the upper management had just appointed me, but were themselves not even convinced about the DFSS method.
    I can tell you, I have been really doubting if this assignment, which was indicated as “the ellected person”, was not “the one we can spare person” . But due to the good support from the Master Black Belt and the colleagues from other plants, I continued with:
    – as already indicated by others: very small BUT VISUAL initiatives with a few believers to show the very first evidence of success.
    – in parallel I was talking my way into several management meetings, each time to talk/convince/show evidence/…
    An yes, 2 years later, these same managers stood up in meetings, and said: “we can not pass this milestone, we did not fulfill all requirements concerning the DFSS approach” (although I still doubt if they really understood what it was all about)
    I am sharing this story with you to tell you that you are not alone. Each person getting this assigment has 3 basic things to do:
    – get somebody to support you who is experienced in the matter
    – get some believers around you, who are willing to step into the ride, to get first quick wins-visual evidence
    – make sure you are working on a cooperative management atmosphere on this topic.
    And last but not least: It toke our organisation 5 years to be able to state that we fully implemented DFSS as a way of living by all employees.

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    #173240

    Bart
    Participant

     
    A nice definition from the Minitab help menu:
    Xbar S process behaviors charts display a control chart for subgroup

    means (an X chart) and a control chart for subgroup standard deviations (an S chart) in the same graph window. The X chart is drawn in the upper half of the screen; the S chart in the lower half. Seeing both charts together allows you to track both the process level and process variation at the same time, as well as detect the presence of special causes

    . See [31] for a discussion of how to interpret joint patterns in the two charts.
    X and S charts

    are typically used to track process variation for samples of nine or more, while X and R charts

    are used for smaller samples.
    BDR

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    #65005

    Bart
    Participant

    Hari,
    There is an interesting book “Six Sigma & Pricing” (“The goal of pricing operations is to consistently control price deviations in transactions and contracts over time and across customer segments. This goal of ensuring the prices are not too low ot too high in defferent transactions relative to guidelines lends itself perfectly to Six Sigma”)
    Adam,
    Can you share some more info related to the Green Belt “Growth” training that you provide? That looks very valuable!
    Bart

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    #57448

    Bart
    Participant

    Hi Serafettin
    Can you give more details on what you are trying to do? It sounds strange idea to use the GRR for the exams. If the exams are a kind of measurement system. GRR has these main elements : Parts (what measured), operators (appraisers) and measurement system itself (tool, method, enviorement.. etc.) What are the corresponds for them in exam case? 
    B.S

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    #164639

    Bart
    Participant

    May I in turn suggest that you are in no way qualified to recommend doctoral dissertation topics to anyone? 
     
    May I also point out to all current respondents to this thread that you’re tagging into a four year old posting?  
     
    Either the original twit has realized his or her own incapability of synthesizing and adding to the great Six Sigma body of knowledge or he or she should be well into his or her writing phase by this time.    
     
    You should perhaps continue to plow other more current fields – and remember (ye of many screen names), your plowing seems to go faster with your shallow tilt of the blade. 

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    #64432

    Bart
    Participant

    Bag of apples is discrete.

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    #58750

    Bart
    Participant

    I did SIPOC for complaints in financial services.

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    #135647

    Bart
    Participant

    I did SIPOC for complaints in financial services. This thread has been moved to the Financial Services discussion forum. Please click here to continue the discussion.

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    #58676

    Bart
    Participant

    You have to find out what kind of problems there are in your finance department.

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    #58629

    Bart
    Participant

    Hi, your question is too general …

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    #56751

    Bart
    Participant

    I think you won’t find company deploying Six Sigma in Romania.

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    #58601

    Bart
    Participant

    I have done :-)
    Bart

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    #58586

    Bart
    Participant

    I do.

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    #120239

    Bart
    Participant

     could someone email the file to me?

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    #117303

    Bart
    Participant

    Your answer is embedded in the statement that you produce 4-5 pieces per hour.  That alone suggests X, mR as your monitoring tool (i.e., why wait an hour to collect 5 pieces to be measured as though a single subgroup? — you would absolutely lose the aspect of real-time process monitoring/responsiveness).  You could even begin by measuring every produced piece, separately charting each of the 10-15 dimensions.  Then after collecting some history, cut back test frequency for those dimensions proven clearly capable and controlled, focusing testing resources on controlling the less capable dimensions most putting process success at risk.

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    #110719

    Bart
    Participant

    Look at an MLA handbook or ask your professor how he/she wants the articles referenced in your paper. Also keep in mind that mostly all articles on this site will be biased in favor of six sigma….;)

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    #100535

    Bart
    Participant

    If the estimation of sigma is biased, then the calculated F-statistic will may not follow the theorized F distribution, even if the null hypothesis is true. The result could be a much greater tendency to reject the null hypothesis than expected. You’ll see differences where differences don’t exist.

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    #100491

    Bart
    Participant

    The wording is a little off.  In MSA, the value 5.15 doesn’t really have anything to do with confidence intervals. 
    Its just that the region 5.15 standard deviations wide and centered on the mean incorporates 99% of the population

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    #100490

    Bart
    Participant

    In many uses, such as ANOVA, the degrees of freedom are essentially an “adjusted” measure of sample size for the sample used to estimate the respective variance(s).
    If you divide the squared deviations from the mean by n instead of (n-1), you will get a biased estimate of the population variance. That means that as the sample size gets larger and larger, the estimate will tend toward SQRT(n-1)/n)*sigma, rather than sigma. By dividing by (n-1) instead of just n, we create an unbiased estimate of the population variance – one that will tend toward the true value of sigma.
    In the ANOVA, the F-statistic is simply a ratio of variances, so each of these variances needs to be calculated using an appropriate degrees of freedom – so they are not biased.
    Keep in mind that the idea behind most statistical tests is that we find a test statistic whose distribution can be predicted under the null hypothesis assumption. If the test statistic calculated from your data shows sufficient evidence of not coming from the hypothesized distribution, then we may decide that the null hypothesis is not true.
    In the case of ANOVA, the test statistic is the ratio of two varainces. The degrees of freedom are a necessary bit of information when trying to predict the distribution of the F-statistic under the null hypothesis assumption that there are no significant model terms (e.g. no differences between the means in a one-way ANOVA).
    The same thing can be said about predition of the t-statistic under the null hypothesis for a t-test.

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    #100477

    Bart
    Participant

    The Cp metric reflects the potential capability of the process assuming that the histogram is positioned cantrally within the speciation limits (VOC).
    Cp values of 1.33 or above are considered accaptable whilst above 2 is excellent.
    The Cpk metric reflects the actual capability of the process by measuring the same ratio as the Cp, but only the nearest specification limit, since this is the limit which is most likely to be failed.

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    #100425

    Bart
    Participant

    The simple linear regression and related methods that most people are taught in school or BB training DOES have the assumption that the model’s RESIDUALS (the differences between the observed values and the predicted values) are normally distributed with a common variance. The raw data themself will not necessarily fall under a single distribution. That is why you should test the residuals for normality.
    Techniques are available that can fit models using other distributions. When using regression with life data, for example, it is common to use distributions such as Weibull, Lognormal, and others.

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    #100029

    Bart
    Participant

    Hello Naga,
    Sigma is a statistical concept that represents the amount of variation present in a process relative to customer requirements or specifications. When a process operates at the six sigma level, the variation is so small that the resulting products and services are 99.9997% defect free.
    Best regards,Bart

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    #98776

    Bart
    Participant

    Hello Rafi,
    I have implemennetd Six Sigma process in marketing area in my Company. I am going to take part at Six Sigma Summit in London next week so if you be present in London during Summit we can discuss this subject there.
    RegardsBart

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    #98459

    Bart
    Participant

    But how to implement Six Sigma into Corporation Culture ?

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    #97553

    Bart
    Participant

    Hello,
    there is a slight difference between 6 sigma and 3 sigma.
    6 sigma means 3 defects per million opportunities3 sigma means 66 807 defects per millino opportunities.
    66 806 is larger than 3 :-)
    Regards,Bart

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    #97180

    Bart
    Participant

    Hello from Poland,
    What kind of documentation do you need ? There are a lot of books about Six Sigma so I recommend to buy them at amazon (http://www.amazon.com).
    Regards,
    Bart

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    #58042

    Bart
    Participant

    Tracee,
    thank you for a few ideas.
    Regards, Bart

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    #96737

    Bart
    Participant

    Hi,
    I have undertaken Six Sigma project in my bank recently. If you want we can share our observations via e-mail. My e-mail is: [email protected]
    Regards, Bart

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    #58031

    Bart
    Participant

    Please specify what kind of help you need … My e-mail is: [email protected]

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    #96643

    Bart
    Participant

    I suggest the following topic:
    “Six Sigma – new management quality

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    #96623

    Bart
    Participant
    #96621

    Bart
    Participant

    1. The most important are customer needs.
    2. Then you have to establish Construction Industry strategic goals (targets).
    3. Simplify processes to cut costs and satisfy customer.
    4. Enjoy better net profit finally :-)
    Reagrds, Bart

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    #96611

    Bart
    Participant

    Dear Mr Sathya
    I am convinced businesses like GE or Motorola have complex processes as well as Construction Industry. So why not to simplify processes in Construction Industry ?

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    #96608

    Bart
    Participant

    Of course, why not ?
    Six Sigma is the way of simplifying complex processes and measuring startegic elements of processes.
    I think Six Sigma can be implemented succesfully in Construction Industry as well as in GE or Motorola :-)

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    #96605

    Bart
    Participant

    Dear Karin,
    I think there are some aspects of Six Sigma you can try to implement in dog walking services. If you can, please make a draft of your business and I will try to give You some hints. My e-mail is: [email protected]
    Regards,
    Bart

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    #96602

    Bart
    Participant

    Dear Karin,
    What do You mean by dog walking services ?
    Regards,
    Bart

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Viewing 39 posts - 1 through 39 (of 39 total)