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. 2020 May 27;12(6):1222. doi: 10.3390/polym12061222

Table 7.

Variance analysis results for the carbon/aramid/epoxy hybrid composite.

Sum of Squares Degrees of Freedom DF Mean Square F Value Risk of Rejection of Ho (Prob > F)
Model 8.690 × 106 3 2.897 × 106 40.85 0.0240
significant
A 9.947 × 104 1 9.947 × 104 1.40 0.3580
B 8.544 × 106 1 8.544 × 106 120.48 0.0082
AB 4.645 × 104 1 4.645 × 104 0.66 0.5033
Curvature 1.857 × 105 1 1.857 × 105 2.62 0.2470
not significant
Pure error 1.418 × 105 2 7.092 × 104
Cor Total 9.018 × 106 5