Calculate Pp
function to calculate Pp - "The elbowroom or margin your process" uses overall sigma value not the QC chart sigma values.
Pp(LSL, USL, s.Sigma)
LSL |
number, customer's lower specification limit. |
USL |
number, customer's upper specification limit. |
s.Sigma |
number, the sigma value determined from overall standard deviation (i.e., sd()). |
numeric, Pp value (unitless)
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