What is sigma coefficient in SAP MFG-ME - SAP Manufacturing Execution?

SAP Term: sigma coefficient

• Component: MFG-ME

• Component Name: SAP Manufacturing Execution

• Description: In SPC Chart Maintenance, the number of standard deviations used to determine the upper and lower control limits.

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• Key Concepts: 
  The sigma coefficient is a measure of process capability used in SAP Manufacturing Execution (MFG-ME). It is a statistical measure that compares the performance of a process to its specification limits. The sigma coefficient is calculated by dividing the difference between the upper and lower specification limits by six times the standard deviation of the process. A higher sigma coefficient indicates that the process is more capable of meeting customer requirements.
  
  How to use it: 
  The sigma coefficient can be used to evaluate the performance of a process and identify areas for improvement. It can also be used to compare different processes and determine which one is more capable of meeting customer requirements. The sigma coefficient can be calculated using data from a control chart or other statistical analysis tools.
  
  Tips & Tricks: 
  When calculating the sigma coefficient, it is important to use data from a stable process. If the process is not stable, then the sigma coefficient may not accurately reflect the process capability. Additionally, it is important to use data from a representative sample of the process in order to get an accurate measure of capability.
  
  Related Information: 
  The sigma coefficient is related to other measures of process capability such as Cpk and Ppk. These measures are also used to evaluate the performance of a process and identify areas for improvement. Additionally, there are other statistical tools that can be used to analyze processes such as control charts and histograms.