Pre Control Chart in Excel

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  A Pre Control Chart is used to evaluate a process before you have enough data (20 samples) to do a control chart or histogram.

Here is a sample Pre Control Chart created using the QI Macros for Excel SPC software

Pre Control Chart in Excel using the QI Macros

How to create a Pre Control Chart

  1. Enter the upper and lower specification limits into the data sheet.
  2. Add data as you begin to run the process.
  3. Evaluate the process much like you would a control chart. Most points should land in the green or yellow. Too many in the red: Danger! You may miss customer specifications.

Control Charts in Excel

Types of Control Charts

The Pre Control Chart Template is just one of the tools included in the QI Macros for Excel SPC Software for Excel.

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