Statistical Details on Notation

In the Process Capability platform, the formulas for the Goal Plot and Capability Box Plots use the following notation:

Yij = ith observation for process j

= mean of the observations on process j

SD(Yj) = standard deviation of the observations on process j

Tj = target value for process j

LSLj = lower specification limit for process j

USLj = upper specification limit for process j

Mj = (USLj + LSLj)/2

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