Assignable variation
A) is a sign that a process is under control.
B) is to be identified and investigated.
C) is the same as random variation.
D) is variation that cannot be traced to a specific cause.
E) leads to a steep Operating Characteristics curve.

Question

Quizplus · Accepted Answer

Assignable variation is a type of variation that can be traced back to a specific cause or source. It is also known as special cause variation. Therefore, if assignable variation occurs, it should be identified and investigated to determine the cause so that corrective action can be taken to eliminate it. This is in contrast to random variation (also known as common cause variation), which is inherent in a process and represents the expected level of variation when the process is operating under stable conditions.

Assignable Variation