Page 608 - Design for Six Sigma a Roadmap for Product Development
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562   Chapter Fifteen


             B     Mean    SE Mean
             1    15.10      2.009
             2    15.06      2.009
             3    16.05      2.009
             C
             1    12.66      2.009
             2    18.31      2.009
             3    15.24      2.009
             D
             1    14.87      2.009
             2    16.40      2.009
             3    14.94      2.009
             E     Mean    SE Mean
             1    17.08      2.009
             2    13.81      2.009
             3    15.31      2.009
             F
             1    16.63      2.009
             2    16.64      2.009
             3    12.94      2.009
             Mean of S/N   15.402

             However, the main-effects chart for sensitivity or β gives the plot in Fig. 15.18
             and MINITAB analysis gives the following:

             Least Squares Means for Beta
             A     Mean    SE Mean
             1    15.02     12.098
             2    17.33     12.098
             3    21.17     12.098
             4    21.72     12.098
             5    18.79     12.098
             6    12.08     12.098
             B
             1    21.04      8.554
             2    17.88      8.554
             3    14.14      8.554


                      A        B       C        D        E        F
             22.0

             19.5
             Beta
             17.0

             14.5

             12.0
                    1  2  3  4  5  6  1  2  3  1  2  3  1  2  3  1  2  3  1  2  3
           Figure 15.18 Main-effects plot—LS means for beta.
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