On a control chart, what separates common from assignable causes of variation?
A) x-bar lines
B) Control limits
C) Specification limits
D) Production limits
E) Mean divided by standard deviation

Question

Quizplus · Accepted Answer

Control limits are the upper and lower limits on a control chart used to distinguish between common causes (within the limits) and assignable causes (outside the limits) of variation. The other options listed are not directly related to separating common from assignable causes of variation on a control chart.

On a Control Chart, What Separates Common from Assignable Causes