When no point lies outside the control limits of a chart,we conclude that:
A) variation in the process is caused by assignable causes and there is enough evidence to infer that the process is in statistical control.
B) variation in the process is caused by chance and there is enough evidence to infer that the process is out of control.
C) variation in the process is caused by chance and there is not enough evidence to infer that the process is out of control.
D) variation in the process is caused by assignable causes and there is not enough evidence to infer that the process is out of control.
E) None of these.

Question

Quizplus · Accepted Answer

When no point lies outside the control limits of a chart, it indicates that the variation in the process is likely due to random (chance) causes rather than specific (assignable) causes, and there is not enough evidence to declare the process out of control. This suggests the process is operating within expected variability limits.

When No Point Lies Outside the Control Limits of a Chart,we