Question: 26. Determine the trial central line and control limits for median and range charts for the data of Table 6-2 . Assume assignable causes for

26. Determine the trial central line and control limits for median and range charts for the data of Table 6-2 .

Assume assignable causes for any out-of-control points and determine the revised central line and control limits.

Compare the pattern of variation with the X and R charts in Figure 6-4 .

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