Getting Insight into Your Process Stability, Quality and Capability

Do you need to identify routine (common-cause) and abnormal (special cause) process variation over time? Are you tasked with comparing how well  a process is performing compared to its given spec limits or after a process is changed? Are you responsible for understanding stability and capability metrics for a large number of processes across time?

In this case study we use process information to see how to:

• View and building control charts to find variations.
• Manage spec limits and attach to data.
• Screen processes to identify possible problems, out-of-control points, and visual summary of process issues.
• Compare variability in processes related to changes (phases) in process.
• Plot the relative frequency or severity of process problems, including before and after an intervention.

Suggested prerequisites:

• Familiarity with common process control terminology.
• Background in control charting and common analyses used for identifying process issues.