Delete a Point from a Control Chart

Remove Point from a Chart and from Control Limit Calculations

It's easy to delete a point from a control chart created using QI Macros. The process is different depending on how you create your control chart:

Control Charts Created with a Macro

To delete a point from a control chart:

  1. Click on the chart.
  2. Click on the point you want to delete. Excel will highlight the point you clicked on and the point before it.
    delete point on control chart
  3. Click on the QI Macros Chart menu (to the far right) to open the control chart tools menu (on the far left). Select "Delete Point".

    delete point from a QI Macros control chart in Excel

  4. Rerun stability analysis without the deleted point by selecting the QI Macros Chart menu and selecting "Analyze Stability."

    re-analyze stability after deleting point on control chart

Control Chart Created with a Template

To delete a point on a control chart template simply delete that point from the input area.

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