AIAG's SPC manual 2nd edition - Page 189 - Process Capability Formula error?

sathis · Oct 7, 2005

In SPC manual 2nd edition, page 189

In Process Capability Formula :

PPU = USL – X bar/ 6s

Whereas , in calculation it is ( 3 s)

It seems to be error in this.

Sathish :frust:

Rob Nix · Oct 7, 2005

I never noticed that before. That indeed appears to be an error, as the further breakdown of the equation on that page confirms.

AIAG's SPC manual 2nd edition - Page 189 - Process Capability Formula error?

sathis

Rob Nix

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