Which is not a rule of thumb to indicate an out-of-control process on the chart?
A) Single point outside three sigma
B) Three of four successive points outside two sigma on the same side of the centerline
C) Four of five successive points outside one sigma on the same side of the centerline
D) Nine successive points on the same side of the centerline

Question

Which is not a rule of thumb to indicate an out-of-control process on the  chart?
A) Single point outside three sigma 
B) Three of four successive points outside two sigma on the same side of the centerline 
C) Four of five successive points outside one sigma on the same side of the centerline 
D) Nine successive points on the same side of the centerline

Quizplus · Accepted Answer

The Answer of Which is not a rule of thumb to indicate an out-of-control process on the  chart?
A) Single point outside three sigma 
B) Three of four successive points outside two sigma on the same side of the centerline 
C) Four of five successive points outside one sigma on the same side of the centerline 
D) Nine successive points on the same side of the centerline

Which Is Not a Rule of Thumb to Indicate an Out-Of-Control