
334 Quality management for organizations using Lean Six Sigma techniques
behavior charts are used, the output will be unstable and nonnormal. At this point, the
initial process capability analysis can be considered as a gross estimate of overall perfor-
mance, only. The baseline report is sometimes called the process scorecard. The actual
overall process performance is reported, with the Z-score (Z
LT
or Z
bench
) and the DPMO
both shown. The above section provides the computations of only the process capability.
The next section focuses on “short-term” performance, that is, potential process capability.
15.2.4 Potential process capability
Overall ...