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Capability Analysis for Short Run process

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    AlexandreRICHARD
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    Hello,

    I’m working in a Low Volume & High Mixed batch Production
    I have 8 very similars products that are manufactured in the same process.

    I want to check the stability of my process.
    I’ve decided to plot Z-MR Control chart. Thanks to that I am able to plot just one Control chart for my 8 products ==> I can check the stability of my process.

    Now I know that my process is stable, it’s in control.

    I want to check my capability :

    Do I have to calculate 8 differents capability index for my 8 products ?
    Is it possible to calculate a global capability for the 8 products assuming, like for the Z-MR control chart, that we are studying the all process and not the products ?
    (They have the same customers requirements)

    Thanks !

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