Control Limits Shown on QI Macros Control Charts

Show - Don't Show 1 and 2 Sigma Lines

QI Macros control charts utilize these control limits calculated from your data to evaluate process stability:

• + 3 sigma line also known as the upper control limit (UCL)
• + 2 sigma line
• +1 sigma line
• a center line (CL)
• - 1 sigma line
• - 2 sigma line
• - 3 sigma line also known as the lower control limit (LCL)

QI Macros give you two ways to turn on and off the 1-2 sigma lines:

Option 1

After you have run a chart, click on the QI Macros chart menu and select Show/Hide 1-2 Sigma Lines. QI Macros will update the chart and all charts you run after that.

Option 2

1. Click on the QI Macros menu, Control Charts and then Control Chart Rules.
2. Select Show/Hide 1&2 Sigma lines.
   
   
3. Now run a chart. The 1 and 2 sigma lines should be visible.
4. To turn the lines back off, simply click on QI Macros, Control Charts, Control Chart Rules and re-select Show/Hide 1&2 Sigma lines.

Note: You only need to set your preference once. It will be retained even if you close Excel and/or restart your computer.

Why Choose QI Macros Over Other Control Chart Software?