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Here we go again

How come when I get a value of none in the Cpk column of the Capability chart yet it also calls out "Y" for Cpk capable? If it is stating Yes for capable should it not kick out a value? Confusing. SPC = Some Parts Conform LOL
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  • NO variation will give an error for Cpk (Divide by zero), that might be why you are getting a NONE. THAT, or you need to change a setting in Datapage.

    OPTIONS ~ SPC CALCULATIONS ~ CAPABILITY THREASHOLD

    Do you have CALCULATE CAP when out of control marked AND Calculate for unilateral tolerance marked?


    Thanks Matt ~ Just went into the options pages and forced it to calulate a CPK when out of control. I am getting more familar with the settings and software. Sorry for my lack of familiarity.

    PS > Don't see alot of feedback in the Datapage forum ~ Feel like not too many are involved with Datapage or they are using another software. Or people just don't have SPC requirements. We are iso certified and need to have a process control in place as a scorecard for process improvement. Are you using SPC or another process control?
Reply
  • NO variation will give an error for Cpk (Divide by zero), that might be why you are getting a NONE. THAT, or you need to change a setting in Datapage.

    OPTIONS ~ SPC CALCULATIONS ~ CAPABILITY THREASHOLD

    Do you have CALCULATE CAP when out of control marked AND Calculate for unilateral tolerance marked?


    Thanks Matt ~ Just went into the options pages and forced it to calulate a CPK when out of control. I am getting more familar with the settings and software. Sorry for my lack of familiarity.

    PS > Don't see alot of feedback in the Datapage forum ~ Feel like not too many are involved with Datapage or they are using another software. Or people just don't have SPC requirements. We are iso certified and need to have a process control in place as a scorecard for process improvement. Are you using SPC or another process control?
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