What is IR chart in SAP QM - Quality Management?

SAP Term: IR chart

• Component: QM

• Component Name: Quality Management

• Description: The individuals/moving-range chart is a type of control chart that uses the differences between the mean values of sequential samples, to determine the dispersion of the process.

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• Key Concepts: 
  An IR chart (also known as an Individual and Moving Range Chart) is a statistical tool used in Quality Management (QM) within SAP. It is used to monitor the stability of a process over time by plotting the differences between consecutive measurements. The chart is divided into three sections: the upper control limit, the center line, and the lower control limit. The upper and lower control limits indicate the maximum and minimum values that are considered acceptable for the process. 
  
  How to use it: 
  The IR chart is used to identify any changes in the process that may indicate a problem. If any of the measurements fall outside of the control limits, it indicates that there may be an issue with the process that needs to be addressed. Additionally, if there are any patterns or trends in the data, this can also be identified using an IR chart. 
  
  Tips & Tricks: 
  When using an IR chart, it is important to ensure that all measurements are taken at regular intervals. This will help to ensure that any changes in the process can be identified quickly and accurately. Additionally, it is important to ensure that all measurements are taken from the same source, as this will help to ensure accuracy and consistency. 
  
  Related Information: 
  The IR chart is just one of many tools used in Quality Management within SAP. Other tools include Control Charts, Pareto Charts, and Histograms. Additionally, there are a variety of other statistical tools available for use in Quality Management, such as Statistical Process Control (SPC) and Design of Experiments (DOE).