iSixSigma

SPC and Cpk

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  • #256026

    Allen Specter
    Participant

    What happens if i implement SPC chart for amount of Qty in and another chart for amount of Qty out for a process I-MR chart for both? My aim is to control the production loss (opposite of yield). Can i control Cpk for this qty in and qty out? Thanks.

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    #256204

    Chris Seider
    Participant

    I can’t imagine doing SPC on amount in and amount out if you are looking at quality as your pain point. Knowing nothing else of your process, why not look at quality % with a run chart. If you’re going to do SPC, I bet you’d have too many things to investigate if quality goes out of control.

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