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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
• Control Charts Created Using Control Chart Templates
• Excel 2007 Workaround for Deleting a Point on an Embedded 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.
   
   

    

   Tip: The first time you click on a point, Excel will select the whole line. Click on the point a second time to select just the point. If you have done this correctly, Excel will highlight your point.

3. Click on the QI Macros Chart menu (to the far right) to open the control chart tools menu. Select "Ghost,Delete or Show Point" then Delete point..
   
   

   

4. Rerun stability analysis without the deleted point by selecting "Analyze Stability" on the same menu.
   
   

Control Chart Created with a Template

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

NOTE: If you use the "Delete Point" function from the QI Macros Chart section, the function will remove necessary calculations from your template.

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Why Choose QI Macros Over Other Control Chart Software?