Enter historical parameters for CUSUM Chart

Stat > Control Charts > Time-Weighted Charts > CUSUM > CUSUM Options > Parameters

Enter the historical value for the standard deviation that Minitab uses to calculate the center line and control limits. If you do not enter a value, Minitab estimates the standard deviation from the data.

Standard deviation
You can enter a single standard deviation for the entire chart, or you can enter a standard deviation for each stage.