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Misclassification rating stable in Process Performance Plot

In Process Performance Plot below a process Y FPC 4 with data point > Upper Control Limit is rated Stable?

Quality and Process Engineering

Re: Misclassification rating stable in Process Performance Plot

Quality and Process Methods > Process Capability > Process Capability Platform Options > Process Performance Plot

• A stability index that exceeds 1.25 indicates that the process is unstable.

• A Ppk that is smaller than 1.0 indicates that the process is not capable.

Re: Misclassification rating stable in Process Performance Plot

Jarma thanks for remark, stability assessment is not linked to control chart signals but to capability ratio's cpk/ppk. I should lower the ratio then link with control chart will be OK.

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