Wider control limits on a process control chart i.e. ,3 sigma as opposed to 2 sigma limits)makes the chart
A)more sensitive to changes in the process
B)correspond to an overall normal probability of 95%
C)have a higher probability that the sample values will fall outside the control limits
D)harder to show changes in the process that are not random

Question

Quizplus · Accepted Answer

Wider control limits, such as 3 sigma limits, encompass more of the natural variability of the process, making it less sensitive to detecting small shifts or non-random changes. This means it's harder to discern changes that are not part of the process's inherent variability.

Wider Control Limits on a Process Control Chart I