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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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  • 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

    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?
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  • 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

    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?
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