A project manager used a control chart to determine whether a process was stable or not, and to determine if its performance was predictable. He determined the upper and lower specification limits based on the contractual requirements. A set of eighteen data points were taken. Of these, 8 consecutive data points were above the mean. What can you say about such a process?
A. A process is considered as out of control if five consecutive data points are above or below the mean. Hence the process is out of control.
B. A process is considered as out of control if six consecutive data points are above or below the mean. Hence the process is within control.
C. A process is considered as being within control if less than half the data points are above or below the mean. Hence the process is within control.
D. A process is considered as out of control if seven consecutive data points are above or below the mean. Hence the process is out of control.