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L1592_Frame_C29 Page 265 Tuesday, December 18, 2001 2:48 PM
Model Matrix for the 2 5−1 Fractional Factorial Experiment on Permeability of Fly Ash Mixtures with the Measured and Log-Transformed Permeabilities
X 1 X 4 X 4 X 5 X 3 X 5 X 3 X 4 X 2 X 5 X 2 X 4 X 2 X 3 X 1 X 5 ln( y) y 45 35 34 25 24 23 15 14 6.932 1025 −1 −1 1 −1 1 1 −1 1 5.247 190 1 1 1 1 1 1 −1 −1 7.307 1490 1 1 1 −1 −1 −1 1 1 4.654 105 −1 −1 1 1 −1 −1 1 −1 7.265 1430 1 −1 −1 1 1 −1 1 1 6.363 580 −1 1 −1 −1 1

X 1 X 3 13 1 −1 1 −1 −1 1 −1 1 1 −1 1 −1 −1 1 −1 1

X 1 X 2 12 1 −1 −1 1 1 −1 −1 1 1 −1 −1 1 1 −1 −1 1

X 5 5 1 −1 −1 1 −1 1 1 −1 −1 1 1 −1 1 −1 −1 1

X 4 4 −1 −1 −1 −1 −1 −1 −1 −1 1 1 1 1 1 1 1 1

X 3 3 −1 −1 −1 −1 1 1 1 1 −1 −1 −1 −1 1 1 1 1

X 2 2 −1 −1 1 1 −1 −1 1 1 −1 −1 1 1 −1 −1 1 1 The defining relation is I = 12345.

TABLE 29.4 X 1 X 0 1 Avg. −1 1 1 1 −1 1 1 1 −1 1 1 1 −1 1 1 1 −1 1 1 1 −1 1 1 1 −1 1 1 1 −1 1 1 1 Note:

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