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Out Of Control Operator

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  • #45900

    murgai
    Member

    What should be done if there are out of control operators in a study. There are three operators and each one is out of control once.(in one case)

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    #150915

    Charles H
    Participant

    Ummm – it is not the operator that is out of control – it is the process!  Be very careful with this kind of “analysis.” 

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    #150916

    MD
    Participant

    As a certified MD, I would prescribe “Xanax” (rather than its generic counterpart). Xanax will calm down the operator and bring the operator back into control. However, in order to show the true impact of the intervention you should implement a DOE (I suggest a simple three-factorial design: Xanax vs. generic by dosis (1/2/10 mg) by gender). I sign up for the 10 mg!
    P.S. My apologies, but this is by far the most hilarious question that I have seen on this site.

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    #150920

    RUKidding
    Member

    If the study shows your Operators out of control I would strongly consider throwing out the study.  Someone has no idea of how to do a study!

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    #150931

    TVI
    Member

    If you ran this throught MTB i would suggest going into the help section of the GR&R and read through the control charting effects….great insight to found there…good luck.

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    #150937

    lin
    Participant

    A good Gage R&R study will use control charts to check for bias and consistency between and within the operators.  I assume this is what you mean by out of control. 
    For example,  suppose you have done a gage R&R with the three operators, ten parts and three trials.  You can and should do a range chart on each operator.  You take operator’s A results and plot them on the range chart, determine Rbar and the UCLr for a subgroup size of 3.  If this chart is out of control, it means that the range of results opeartor A gets is not consistent from part to part.  You should investigate why this occurs.  Since the results are not in control, you don’t know what would happen if you run the Gage R&R again.  So, find out why the operator is out of control.  You can take the same approach for checking the bias and consistency between operators.

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