Quality Glossary Definition: Control chart. Also called: Shewhart chart, statistical process control chart. The control chart is a graph used to study how a process changes over time. Data are …

Control charts are graphical plots used in production control to determine whether quality and manufacturing processes are being controlled under stable conditions.

A control chart displays process data by time, along with upper and lower control limits that delineate the expected range of variation for the process. These limits let you know when …

Jan 28, 2025 · Elements of a Control Chart There are three main elements of a control chart as shown in Figure 3. A control chart begins with a time series graph. A central line (X) is added …

Jul 23, 2025 · A Control Chart is a graphical representation used to study how a process changes over time. It plots data points in the time order and helps detect trends or shifts in the process …

What Is Control Chart? A control chart is a statistical instrument that tracks and controls a process and its performance over a specific period. The purpose of control charts is to identify and …

Mar 7, 2024 · Control charts are graphical representations of process data over time. They show whether the manufacturing process is stable and operating within expected parameters …

Jun 19, 2025 · Control charts are key statistical tools used in statistical process control (SPC), which is used for quality management and process optimization. Control charts are used as a …

Jan 7, 2025 · Control charts are one of the most important tools in Statistical Process Control (SPC), a quality control methodology used across industries to monitor and improve processes.

These diagrams use statistical control limits to distinguish between natural process variations and significant deviations requiring corrective action. Control charts are based on Statistical …