User`s manual

Control Limits: Individuals Charts

The formulas for calculating the control limits for

individuals charts are:

UCL, = x+ ya

LCL, = x-y7

Note: y defaults to 3, but you can change it to

any value from 1 to 5.

Control Limits: p Charts

The formulas for calculating the control limits for p charts

UCL, = p + 3

Pu -P-l

LCL, = p - 3

PI1 -PI

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