The implementation of Statistical Process Control (SPC) begins with which step?

The implementation of Statistical Process Control (SPC) begins with determining the measurement method, which is essential for ensuring consistent and accurate data collection throughout the process. Selecting a measurement method involves identifying the relevant metrics that will be used to evaluate the performance of a process. This step sets the foundation for effective data analysis, as the quality of the data directly affects the reliability of the control limits and the subsequent interpretation of variability.

Once the measurement method is established, it becomes possible to document processes and analyze variability in a structured manner. Without a clear method for measurement, subsequent steps like setting control limits and analyzing variability would be based on unreliable data, potentially compromising the effectiveness of the entire SPC framework. Therefore, starting with a well-defined measurement method is critical to the successful application of Statistical Process Control.