Watch this cusum chart video to see how easy it is to create a cusum chart in Excel using the QI Macros.
Learn More About Cusum Charts
Cusum charts (Cumulative Sum Charts) evaluate stability of processes using variable data--time, cost, length, weight.
The Cusum chart can detect process shifts more rapidly than the XmR or XbarR. If a trend develops, it's evidence that the process has shifted.