_____ point(s) falling above the upper-control limit of a quality control chart signals a possible change in the process.
A)One
B)Two
C)Five
D)Ten

Question

Quizplus · Accepted Answer

Generally, a single data point falling above the upper-control limit indicates that something unusual has occurred in the process. It suggests that the process has shifted or drifted, or there may be an assignable cause that needs to be identified and eliminated. However, if two or more consecutive data points fall above the upper-control limit, this indicates a more serious problem and suggests that the process may be out of control.

_____ Point(s) Falling Above the Upper-Control Limit of a Quality