Control charts — Part 2: Shewhart control charts

This technical specification focuses on the application and implementation of Shewhart control charts within the framework of statistical process control. It provides detailed guidance on the construction, interpretation, and usage of these charts for monitoring process stability and variation. The document outlines the fundamental principles associated with identifying assignable causes of variation, distinguishing between common cause and special cause fluctuations. It covers various chart types tailored for different data characteristics, including variables and attributes data. The content establishes specific rules for plotting data points, calculating control limits, and recognizing patterns indicative of process instability. It serves as a reference for quality engineers and analysts working in manufacturing and service environments to maintain process consistency. The guidelines address the mathematical foundations required for accurate chart development and support decision-making processes related to quality improvement initiatives. By adhering to the prescribed methodologies, organizations can effectively track performance metrics over time and detect deviations early in the production cycle.