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Where the process is going?

Six Sigma – iSixSigma Forums Old Forums General Where the process is going?

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  • #39666

    Manu
    Participant

    Hi All
    I have a Y depending on 4-5 X’s.But I know that with one of the X’s the Y has a relationship that it decreases a that X decreases. I want to know where my process is going without that X.i.e. I want a index that would give me my process condition at a particular point without the effect of that particular X.In other words I want a process capability kind of index for the same; but without considering the effect of that particular X.
    Can any one help me in this? it urgent.
    Thanx in advance
    Regards,
    Manu

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    #121148

    Vikas
    Member

    You have not mentioned if you can measure this “Y” and all of these “X”‘s. If that is the case, its very easy to know your Y without the negative impact of that one X. You need to fix a value of X, based on your historical data, where that value of X gave the most optimum performance of  Y. Once you fix this value for the X, you can then re-calcualte your process in the historical data, and can do the same for the future process. 

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    #121149

    Suggest
    Member

    Try a stepwise regression.

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    #121154

    Peppe
    Participant

    The negative correlation you have is clear. Try to find the same correlations between Y and other Xs. After that analize the impact of the Xs on Y and knowing the correlation coefficients you can do all calculation you need.
    Rgs, Peppe

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    #121200

    Fact man
    Participant

    Try doing a scatter diagram using each x variable and the y variable. If this does not work for you try a DOE.

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