User`s manual

Cpk Index

The formulas for calculating the Cpk index are:

= minimum of (USL -x) or (x- LSL)

or, use these formulas to determiue unilateral tolerances:

Control Limits: X Bar and R Charts

The formulas for calculating the control limits for an X Bar

and R chart are:

UCL, = DJT

Control Limits: X Bar and s Charts

The formulas for calculating the control limits for an X Bar

and s chart are:

UCL, = BJ

c-s