Online statistical calculator that calculates process performance index value by entering the Upper and lower specification limits with standard deviation and mean value. Ppk is always smaller than the Pp.
Online statistical calculator that calculates process performance index value by entering the Upper and lower specification limits with standard deviation and mean value. Ppk is always smaller than the Pp.
Where,
USL = Upper Specification Limit,
LSL = Lower Specification Limit.
Calculator 
Formula 
