Table 1. Experimental design in coded levels and responses

A. Data displayed in Ahn et al. (2017)
Run X1 X2 Y
1 −1 0 217.867
2 0 0 260.500*
3 0 0 186.433
4 1 1 219.767
5 0 0 181.933
6 −1 1 178.267
7 −1 −1 179.900
8 0 0 175.633
9 1 −1 179.533
10 1 0 178.367
11 0 1 182.167
12 0 0 180.333
13 0 −1 185.333
Outlier.