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This International Standard establishes a guide to the use and understanding of the Shewhart control
chart approach to the methods for statistical control of a process.
This International Standard is limited to the treatment of statistical process control methods using only
the Shewhart system of charts. Some supplementary material that is consistent with the Shewhart
approach, such as the use of warning limits, analysis of trend patterns and process capability is briefly
introduced. There are, however, several other types of control chart procedures, a general description of
which can be found in ISO 7870.