Variations in process output that can usually be identified and eliminated without changing the process are:
A) assignable variations.
B) chance variations.
C) out of control variations.
D) random variations.
E) All of these.

Question

Quizplus · Accepted Answer

Assignable variations, also known as special cause variations, are variations that can be identified and eliminated by identifying their root causes and making changes to the process. This is in contrast to chance variations (also called common cause variations or random variations) which cannot be eliminated without making changes to the process itself. Out of control variations refer to situations where the process is not stable, and may include both assignable and chance variations. Random variations refer specifically to chance or common cause variations.

Variations in Process Output That Can Usually Be Identified and Eliminated