TS ISO 7870

TS ISO 7870 is a general guide and introduction to control charts, explaining the core philosophy, main components and principal forms of this approach. In statistical process control, a control chart is a graphical and statistical tool used to track how a process behaves over time, helping distinguish natural variation from special causes and assess whether the process is stable.

The framework behind control-chart use

The scope of this standard covers a wide variety of control charts, including those related to Shewhart control charts and those with a process-acceptance or on-line predictive emphasis. In general technical terms, Shewhart-type charts look for signals through a center line and control limits, while other chart families may support acceptance decisions, early warning, or in-process prediction. In that sense, “control chart” refers to a family of methods for monitoring process behaviour rather than a single plotting technique.

How the main chart families differ

• Shewhart control charts: the classical approach for monitoring short-term process variation.
• Process-acceptance charts: support statistical decision-making for accepting a process or lot.
• On-line predictive charts: help evaluate process performance from live or continuously updated data.
• General guide status: this document introduces the conceptual basis and categories of control charts, rather than serving as a standalone detailed method standard for every application.

TS ISO 7870 provides a useful reference framework for understanding control charts in quality engineering, manufacturing processes, service systems and other continuously monitored activities. It supports the terminology and foundational thinking used in applying statistical methods, and helps users understand which charting approach may be appropriate for a given monitoring or decision-making purpose.