Page 262 - Statistics for Environmental Engineers

L1592_Frame_C29 Page 265 Tuesday, December 18, 2001 2:48 PM

ln( y) 6.932 5.247 7.307 4.654 7.265 6.363 5.858 4.007 7.258 6.016 6.413 3.689 7.948 5.273 6.607 3.807

Model Matrix for the 2 5−1 Fractional Factorial Experiment on Permeability of Fly Ash Mixtures with the Measured and Log-Transformed Permeabilities
1025 1490 1430 1420 2830
y 190 105 580 350 55 410 610 40 195 740 45
X 4 X 5 45 −1 1 1 −1 1 −1 −1 1 −1 1 1 −1 1 −1 −1 1

X 3 X 5 35 −1 1 1 −1 −1 1 1 −1 1 −1 −1 1 1 −1 −1 1

X 3 X 4 34 1 1 1 1 −1 −1 −1 −1 −1 −1 −1 −1 1 1 1 1

X 2 X 5 25 −1 1 −1 1 1 −1 1 −1 1 −1 1 −1 −1 1 −1 1

X 2 X 4 24 1 1 −1 −1 1 1 −1 −1 −1 −1 1 1 −1 −1 1 1

X 2 X 3 23 1 1 −1 −1 −1 −1 1 1 1 1 −1 −1 −1 −1 1 1

X 1 X 5 15 −1 −1 1 1 1 1 −1 −1 1 1 −1 −1 −1 −1 1 1

X 1 X 4 14 1 −1 1 −1 1 −1 1 −1 −1 1 −1 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:

© 2002 By CRC Press LLC