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  2. Shewhart individuals control chart - Wikipedia

    en.wikipedia.org/wiki/Shewhart_individuals...

    Next, the upper control limit (UCL) and lower control limit (LCL) for the individual values (or upper and lower natural process limits) are calculated by adding or subtracting 2.66 times the average moving range to the process average: = ¯ + ¯.

  3. Control chart - Wikipedia

    en.wikipedia.org/wiki/Control_chart

    Control charts are graphical plots used in production control to determine whether quality and manufacturing processes are being controlled under stable conditions. (ISO 7870-1) [1] The hourly status is arranged on the graph, and the occurrence of abnormalities is judged based on the presence of data that differs from the conventional trend or deviates from the control limit line.

  4. x̅ and s chart - Wikipedia

    en.wikipedia.org/wiki/X̅_and_s_chart

    Use variable-width control limits [6] Each observation plots against its own control limits as determined by the sample size-specific values, n i, of A 3, B 3, and B 4: Use control limits based on an average sample size [7] Control limits are fixed at the modal (or most common) sample size-specific value of A 3, B 3, and B 4

  5. p-chart - Wikipedia

    en.wikipedia.org/wiki/P-chart

    The control limits for this chart type are ¯ ¯ (¯) where ¯ is the estimate of the long-term process mean established during control-chart setup. [ 2 ] : 268 Naturally, if the lower control limit is less than or equal to zero, process observations only need be plotted against the upper control limit.

  6. Process window index - Wikipedia

    en.wikipedia.org/wiki/Process_Window_Index

    The control limits are set at three standard deviations on either side of the process mean, and are known as the upper control limit (UCL) and lower control limit (LCL) respectively. [2] If the process data plotted on the control chart remains within the control limits over an extended period, then the process is said to be stable. [2] [3] The ...

  7. Even Max Verstappen, believe it or not, can have bad day at ...

    www.aol.com/even-max-verstappen-believe-not...

    MIAMI GARDENS — Do what Max Verstappen did Sunday afternoon and it’ll cost you $165.. It cost Max Verstappen a lot more. For the first time in the three-year history of the Formula 1 Miami ...

  8. Western Electric rules - Wikipedia

    en.wikipedia.org/wiki/Western_Electric_rules

    The Western Electric rules are decision rules in statistical process control for detecting out-of-control or non-random conditions on control charts. [1] Locations of the observations relative to the control chart control limits (typically at ±3 standard deviations) and centerline indicate whether the process in question should be investigated for assignable causes.

  9. Formula 1 Implements Tire Usage Limits for Qatar - AOL

    www.aol.com/finance/formula-1-implements-tire...

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