p Chart and u Chart Formats

When you run a p chart or u chart in the QI Macros, the default format is "flat or skyline limits" that display the UCL, CL, LCL and your data.

To change the QI Macros default from flat/skyline limits to wavy limits, click on Control Charts, then Control Chart Rules, then p/u UCL_LCL format.

A window will open showing the new format you are selecting. Click OK to change the format.

Now run the p chart or u chart again and the control limits will be wavy vs flat/skyline.

Here is a p chart with wavy control limits:

Since the p chart is a fraction defective chart, the UCL is limited to 100% and the LCL is limited to 0%