A tool for assessing the combined capability of any system. The Capability Rollup Report can combine (roll up) capabilities from process steps or product components, which can have either continuous or discrete data. The report contains a detailed rollup analysis showing the capability of the individual components and combined capability measures (for example, throughput yield, rolled throughput yield, and DPMO) for the individual steps and components as well as the combined system.
|When to Use||Purpose|
|Pre-project||Assist in project selection by focusing on portions of a process or a product that have high defect rates.|
|Start of project||Perform a baseline capability analysis (for processes with discrete data) on the process to determine the capability of the overall process and its components at the start of the project. The baseline analysis also helps set improvement goals for the project.|
|Mid-project||Perform a confirmation capability analysis (for processes with discrete data) after improvements have been implemented to confirm that the process performs as predicted.|
|End of project||Perform a capability analysis (for processes with discrete data) after implementing controls to obtain a final assessment of process capability, and also to determine whether the project attained its improvement goals.|
Summarized data: defects, opportunities, units, DPMO, and Z shift.