SQC/SPC stands for Statistical Quality Control/Statistical Process Control. These are methods used in manufacturing and other industries to monitor, control, and improve processes and products.

Statistical Quality Control (SQC) involves the use of statistical methods to monitor and control a process to ensure it operates at its full potential to produce conforming products. SQC encompasses various techniques like control charts, acceptance sampling, and process capability analysis.

Statistical Process Control (SPC) is a subset of SQC and focuses on monitoring and controlling a process in real-time. It uses statistical methods like control charts to identify variations in a process and determine if it is stable or if there are any special causes of variation that need to be addressed.

Both SQC and SPC aim to improve quality, reduce defects, and optimize processes by using data-driven approaches and statistical tools.