SQC SPC

Sure, SQC (Statistical Quality Control) and SPC (Statistical Process Control) are both methodologies used in manufacturing and production environments to monitor and improve the quality of processes and products.

1. **Statistical Quality Control (SQC)**: SQC involves the use of statistical methods to monitor and control the quality of a product or process. It’s focused on inspecting a sample of products or processes to determine whether they meet specified quality standards. SQC typically involves techniques such as sampling, control charts, and statistical analysis to detect and address variations in quality.

2. **Statistical Process Control (SPC)**: SPC is a subset of SQC that specifically focuses on controlling and improving the quality of processes. It involves using statistical methods to monitor and analyze the performance of a process in real-time. The goal of SPC is to identify and eliminate sources of variation in the process that could lead to defects or errors in the final product. Control charts, process capability analysis, and other statistical tools are commonly used in SPC to monitor process stability and capability over time.

In summary, SQC is a broader term that encompasses various statistical methods for quality control, while SPC is a specific application of those methods focused on controlling and improving processes. Both are essential in ensuring consistent quality and reducing defects in manufacturing and other industries.