Page 233 - Six Sigma Advanced Tools for Black Belts and Master Black Belts
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August 31, 2006
JWBK119-14
218 Data Transformation for Geometrically Distributed Quality Characteristics
20
UCL 18.4
15
10 MEAN 9.1
X^(1/4)
5
0 LCL −0.2
−5
0 5 10 15 20
Row Numbers
15
UCL 13.4
12.5
10
Ln X MEAN 8.6
7.5
5
LCL 3.6
2.5
0 5 10 15 20
Row Numbers
4
3 UCL
2
Q-transform −1 1 0
−2
−3 LCL
−4
0 5 10 15 20
Row Numbers
Figure 14.3 Control chart for data set in Table 14.3 based on three transformations.
