When only common cause variation is present in a process, _____.
A) no changes or adjustments are necessary
B) we conclude the process is out of control
C) human error is the sole source of variation
D) the source of the variation is easily identified

Question

Quizplus · Accepted Answer

Common cause variation is a natural part of a process and is expected to occur randomly over time. As a result, no special action or adjustment is required to address common cause variation. It is only when special cause variation is present that the process may need to be adjusted or changed.

When Only Common Cause Variation Is Present in a Process