This data file is intended for use with the Multilevel Categoric tutorial.
The experiment in this case, which comes from Montgomery's Design and Analysis of Experiments, seeks consistently long life in a battery that will be subjected to extremes in ambient conditions. It evaluates three materials (factor A) at three levels of temperature (factor B). Four batteries are tested at each of the nine two-factor combinations in a completely randomized design.
35
35
72
72
72
1
0.05
1
0.99
0
0
0
1
-1
-1
0
0
0
1
-1
-1
A1
15
155
A1
70
80
A2
15
159
A3
125
82
A1
15
74
A3
125
60
A3
15
168
A1
125
70
A1
15
180
A3
15
138
A2
125
45
A1
125
82
A1
15
130
A1
125
20
A2
125
25
A3
15
160
A2
125
70
A2
125
58
A1
125
58
A1
70
40
A3
15
110
A3
70
120
A2
70
122
A3
125
104
A3
70
174
A3
125
96
A2
15
150
A2
15
126
A1
70
75
A3
70
150
A1
70
34
A2
15
188
A2
70
115
A2
70
106
A3
70
139
A2
70
136