: Using statistical tools to track real-time performance against established targets.
A significant portion of IPC-9191 deals with the assumption of normality. Standard SPC tools (like bell curves) assume data follows a "Normal Distribution." IPC-9191 outlines: ipc9191 pdf
Emphasizes that variation is inherent in all processes and aims to distinguish between normal variation and "special causes" that lead to defects. Recommended Tools: : Using statistical tools to track real-time performance
: Using tools like control charts and histograms to distinguish between normal process variation and "special cause" disturbances. Core Elements of the Standard ipc9191 pdf