Question: 6. Determine the central lines and control limits for Z and W charts with a subgroup size of 2 and draw the graphs. If the
6. Determine the central lines and control limits for Z and W charts with a subgroup size of 2 and draw the graphs. If the target X is 1.50 and the target R is 0.08, determine the plotted points for three subgroups.
Subgroup X1 X2
1 1.55 1.59
2 1.43 1.53
3 1.30 1.38
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