Table 5: Response table for S/N ratio.

Level A B C D 1 5.468 5.288 5.326 5.483 2 5.338 4.809 4.726 4.678 3 4.117 4.827 4.871 4.762 Delta 1.351 0.479 0.600 0.805 Rank 1 4 3 2 Total mean S/N ratio = 4.974417