91Process Capability Analysis at a Manufacturing Company
FIGURE 6.13
Approach to constructing
X
___
chart before process improvement.
FIGURE 6.14
Selections for
X
___
chart before process improvement.
92Six Sigma Case Studies with Minitab
®
191715131197531
57
56
55
54
53
52
Sample
Sample Mean
X = 54.646
UCL = 57.134
LCL = 52.158
Xbar Chart of Product 1, ..., Product 5
FIGURE 6.15
X
___
chart before process improvement.
FIGURE 6.16
Approach to capability analysis before process improvement.
93Process Capability Analysis at a Manufacturing Company
FIGURE 6.17
Subgroup sele ...
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