Statistical Process Control provides the ability to determine if a process is stable over time, or, conversely, if it is likely that the process has been influenced by "special causes" which disrupt the process. Statistical Control Charts are used to provide an operational definition of a "special cause" for a given process, using process data.
Concepts
Statistical process control defined
Responding to Special Cause Variation
When To Use, How To Interpret, & Calculations for each chart:
Individual-X Charts (X-Charts)
Histograms / Process Capability Analysis
Applications
Getting Started with SPC Initiative
Key Success Factors for the Implementation of SPC
How to Perform a Process Capability Study
Analysis of Batch Processes using a Batch Means Chart
Case Study: SPC to Improve Quality and Reduce Cost