This is file boxconverter_4_16.dat
Purpose: Examine the effect of cat/temp/pres/conc effect
on chemical process conversion yield
Source: Box, Hunter, & Hunter (1978), "Statistics for Experimenters",
page 325, Wiley
2**4 Full Factorial Design
Number of observations = 16
Total number of variables per line image = 6
Order of Variables on a line image:
1. Response variable = % conversion
2. Factor 1 = catalyst charge (2 levels: 10 & 15 pounds)
3. Factor 2 = temperature (2 levels: 220 & 240 deg c)
4. Factor 3 = pressure (2 levels: 50 & 80 psi)
5. Factor 4 = concentration (2 levels: 10 & 12 %)
6. Order number = order in which data was collected
To read this file into dataplot--
skip 25
read boxconverter_4_16.dat y x1 x2 x3 x4 order
Y X1 X2 X3 X4 Run
Conv Cat Temp Pres Conc Order
%
-----------------------------------
71 -1 -1 -1 -1 8
61 +1 -1 -1 -1 2
90 -1 +1 -1 -1 10
82 +1 +1 -1 -1 4
68 -1 -1 +1 -1 15
61 +1 -1 +1 -1 9
87 -1 +1 +1 -1 1
80 +1 +1 +1 -1 13
61 -1 -1 -1 +1 16
50 +1 -1 -1 +1 5
89 -1 +1 -1 +1 11
83 +1 +1 -1 +1 14
59 -1 -1 +1 +1 3
51 +1 -1 +1 +1 12
85 -1 +1 +1 +1 6
78 +1 +1 +1 +1 7