It is entirely possible for the R-chart to show that a process is in statistical control and the -chart to show that the same process is out of control.
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Q1: Variation exists naturally in the world around
Q3: Process control charts are used to provide
Q4: In process improvement efforts, the goal is
Q6: Special cause variation is variation in the
Q8: A p-chart would potentially be used to
Q10: The control limits in the x-bar chart
Q12: One of the roles of managers who
Q13: Total process variation is made up of
Q18: Both p-charts and c-charts are designed for
Q20: Common cause variation is variation in the
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