Introduction
Chart Types
There are several types of control charts, including X-bar and R charts, p-charts, and c-charts. Each type of control chart is used to monitor a specific process variable, such as the mean, range, proportion of defects, or number of defects per unit. The choice of control chart depends on the type of data being collected and the goals of the quality control program.
Chart Selection
Chart Interpretation
Control charts are used to monitor process performance and detect changes in the process over time. The charts are used to distinguish between normal process variation and special causes of variation, such as changes in the process or equipment malfunction. Interpretation of control charts requires an understanding of statistical process control concepts and the ability to identify trends and patterns in the data.