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Even if all the points on an fall between the control
Chapter 13, Problem 5E(choose chapter or problem)
QUESTION:
Even if all the points on an \(bar{x}\) - chart fall between the control limits, the process may be out of control. Explain.
Text Transcription:
bar{x}
Questions & Answers
QUESTION:
Even if all the points on an \(bar{x}\) - chart fall between the control limits, the process may be out of control. Explain.
Text Transcription:
bar{x}
ANSWER:Step 1 of 2
Though all data points on a 
of control sometimes.
In some cases, we observe that there are 7 or more points following a particular trend
(either increasing or decreasing) but none of them are outside of the control limits. This
may lead to a gradual change in the process levels.