Case 8-Improving a commercial bank's operation performance through statistical process control

1. The paper states that after the elimination of particular causes, they observe that ".. the average cycle time and the variances (e.g., the distance between UCL and LCL) tremendously reduced, which were not only reflected in X chart, but in the R chart. " review the control charts and discuss the causes of the performance improvements.
2. Think about an operation. And identify opportunities to use the SPC control map to improve operational performance. Please discuss