Which of the following in not an out of control signal for an x-bar chart?
A) One or more points outside the control limits
B) Seven or more consecutive points that all fall on the same side of the center line
C) Six or more consecutive points moving in the same direction (an upward or downward trend)
D) Fourteen points in a row, alternating up and down

Question

Quizplus · Accepted Answer

The Answer of Which of the following in not an out of control signal for an x-bar chart?
A) One or more points outside the control limits
B) Seven or more consecutive points that all fall on the same side of the center line
C) Six or more consecutive points moving in the same direction (an upward or downward trend)
D) Fourteen points in a row, alternating up and down

Which of the Following in Not an Out of Control