iSixSigma

Amit Kumar Ojha

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  • Hi David,

    Just a few important points to keep in mind at the onset:

    1. First and foremost do finalize on the scope of the process. A tool (you might be well aware of) – COPIS would help you in finalizing the high level process map along with the process boundaries. It would help you in your discussion with the mentor.

    2. When you are writing…[Read more]

  • Hi Philip,

    Shelby has almost covered all the aspects. In addition I would just like to share my experience with Six Sigma projects. I have found that many people are not very much interested in the documentation part of any Six Sigma project and it is done half halfheartedly which clearly reflects in the output. It is very important to understand…[Read more]

  • Dear James,

    In general, every measurement system must be validated before you can use the same for measuring the CTQ’s. Here one of the CTQ’s you have mentioned is Seal Strength. In this case if you happen to assign this task of measuring the seal strength to 3 operators, how would you ensure that the variation in the measurement of the seal…[Read more]

  • Dear Prasenjit,

    In order to understand and model the combined effect of multiple independent variables on one dependent variable, you need to perform multiple regression. There are basically two approaches i.e Forward Stepwise and Backward Stepwise.

    Both these approached are available in Minitab 16.

    You use Forward Stepwise when you…[Read more]

  • Dear Prasenjit,

    In order to understand and model the combined effect of multiple independent variables on one dependent variable, you need to perform multiple regression. There are basically two approaches i.e Forward Stepwise and Backward Stepwise.

    Both these approached are available in Minitab 16.

    You use Forward Stepwise when you…[Read more]

  • Dear Prasenjit,

    In order to understand and model the combined effect of multiple independent variables on one dependent variable, you need to perform multiple regression. There are basically two approaches i.e Forward Stepwise and Backward Stepwise.

    Both these approached are available in Minitab 16.

    You use Forward Stepwise when you start…[Read more]

  • Hi Tracy,

    Katie is right but since you asked the question, I am mentioning below how you can resolved it.
    See here any lot which has more than or equal to 6 defects will be considered defective. We are concerned about the number of lots which would be accepted (non defective) in long run. Since here we are talking about defectives, the…[Read more]

  • Amit Kumar Ojha's profile was updated 5 years, 3 months ago

  • Hi,

    As per my expereince the time it takes to complete a six sigma project mostly depends upon the following factors:
    1. The calrity of scope.
    2. Top Management commitment – Whether top management is ready to invest the time and resources in the project and if yes, then to what extent. Much of it also depends on the criticality of the project.
    3.…[Read more]

  • Amit Kumar Ojha's profile was updated 5 years, 3 months ago

  • Hi Jackie,

    As such you dont need to worry too much about the know-how of using a tool. As Rinkon mentioned you can find all the details in iSixSigma. However, what is more important is your expereince in selection of appropriate tool to be applied in a particular business scenario.

    All the Best!!! 5 years, 3 months ago

  • Thanks Robert for your valuable insights.
    This discussion is very useful for people who want to know the basics of DOE… 5 years, 3 months ago

  • Amit Kumar Ojha's profile was updated 5 years, 3 months ago

  • Thanks Robert, Norbert, Shelby and JB.

    I read you valuable comments. Although I have never used DOE but after carefully reading the inputs, I came to the following conclusion. (Please correct me if my understanding is wrong)

    1. DOE is an active method wherein the factors are manipulated to see their impact on dependent varaible however,…[Read more]

  • Hi Nibin,

    BY write up, what exactly do you mean ? If you mean Project Charter, here are few guidelines:
    1. You need to mention Business Case (Current Pain Area), Specific Problem Statement (Pain Area Quantified), Goal Statement (Improvement target), In scope and Out Scope, Team Roles and Responsibilities.
    2. Only if you explain the entire…[Read more]

  • Hi John,

    See as far as I know, there can be only one point which you need to take care about the formula for sample size calculation i.e. whether you are concerned about one tailed or two tailed test.
    In this context Nigel is correct.

    However, the formula which you used to calculate the sample size is not correct.

    Refer Levin and Rubin -…[Read more]

  • Hi Patrick,

    As mentioned by Strayer, you are complicating the things at the initial level.
    See first understand the purpose of COPIS. COPIS is not a tools for in-depth analysis of your process, the purpose of COPIS is :
    1. To communicate to everyone the high level understanding of the process
    2. To check if there is proper alignment /…[Read more]

  • Hi Patrick,

    As mentioned by Strayer, you are complicating the things at the initial level.
    See first understand the purpose of COPIS. COPIS is not a tools for in-depth analysis of your process, the purpose of COPIS is :
    1. To communicate to everyone the high level understanding of the process
    2. To check if there is proper alignment / utilization…[Read more]

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