Information Technology Reference
In-Depth Information
Signal Factors & Levels
15
TABLE 18.4
Factor
Level 1
Level 2
Level 3
A
A
1
A
2
—
B
B
1
B
2
B
3
C
C
1
C
2
C
3
D
D
1
D
2
D
3
E
2
'
E
E
1
E
2
F
1
'
F
F
1
F
2
G
1
'
G
G
1
G
2
H
H
1
H
2
H
3
investigation, it was found that bugs did not occur in the on-factor test of H, but occur
with its combination with G) (
G
'
, the same level because of the dummy treatment
used) and B
1
or B
2
. Because B
3
is a factor level whose selection blocks us from
choosing (or annuls) factor levels of H and has interactions among signal factors, it
was considered to be the reason this result was obtained.
=
TABLE 18.5
L
18
Orthogonal Array and Response (y)
No
A
B
C
D
E
F
G
H
y
1
1
1
1
1
1
1
1
1
0
2
1
1
2
2
2
2
2
2
0
2
'
1
'
1
'
3
1
1
3
3
3
1
1
'
4
1
2
1
1
2
2
3
1
2
'
1
'
5
1
2
2
2
1
1
0
6
1
2
3
3
1
1
2
2
0
1
'
7
1
3
1
2
1
2
3
0
1
'
8
1
3
2
3
2
1
1
0
9
1
3
3
1
2
'
2
1
2
0
10
2
1
1
3
2
'
2
2
1
0
11
2
1
2
1
1
1
'
1
'
2
0
12
2
1
3
2
2
1
1
3
1
13
2
2
1
2
2
'
1
1
'
2
0
14
2
2
2
3
1
2
1
3
1
15
2
2
3
1
2
1
'
2
1
0
16
2
3
1
3
2
1
'
1
2
0
17
2
3
2
1
2
'
1
2
3
0
18
2
3
3
2
1
2
1
'
1
0
15
Because of author's company confidentiality policy, they have left out the details about signal factors
and levels.
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