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Table 7

ANOVA for BH (LM6/B4C/fly ash).

Source of variation DoF SS MS F P Contribution (%)
Feed rate (A) 2 7.506 3.7531 4.92 0.02 4.24
Spindle speed (B) 2 129.913 64.9563 85.09 0.00 73.41
Drill material (C) 2 21.313 10.6566 13.96 0.00 12.04
Reinforcement percentage (D) 2 4.494 2.247 2.94 0.08 2.54
Pooled error 18 13.742 0.7634     7.77
Total 26 176.968       100.00

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