Special cause variation in a process is more likely to be detected with
A)wider control limits
B)narrow control limits
C)wider specification limits
D)narrow specification limits

Question

Quizplus · Accepted Answer

Narrow control limits allow for tighter control of the process and make it easier to detect any special cause variation that may occur. Wider control limits increase the chance of false alarms or failing to detect changes in the process performance. Therefore, it is better to have narrow control limits to detect any special cause variation in the process.

Special Cause Variation in a Process Is More Likely to Be