Misclassification rating stable in Process Performance Plot

[#1]

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

[#2 · Accepted solution]

Quality and Process Methods > Process Capability > Process Capability Platform Options > Process Pe... 

• 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.

[#3]

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.