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