SPC (Statistical Process Control)

Statistical process control uses control charts and statistics to monitor a process and detect when it drifts out of its normal range, so issues are caught before they become defects. It distinguishes normal variation from genuine problems that need action.

SPC plots process measurements against statistically derived control limits, signalling when a process is no longer in control. It prevents both over-reaction to normal variation and missed real shifts. SPC is a foundation of Six Sigma and quality programmes, and overlaps with modern anomaly detection on process data.

Related terms

Six Sigma · Anomaly Detection · OEE (Overall Equipment Effectiveness)

Software

Where this applies

Rolling out statistical process control (SPC) · Improving first-pass yield · State of AI in Pharmaceutical Manufacturing 2026