L
lmoreno12
First i would like to apologize for my poor english. I have a doubt about the term PPM used in SPC (control charts, capability analysis), for example: I know that a process with Cpk > 1,67 we have a ppm below 0,5. But this PPM is about parts with some kind of defect (under or above Engineer Specification), or just above or under Control Specifications (Talking about Control charts). If my question isn't very clear please let me know.