[Retracted] Multiobjective Optimization of Mechanical Properties on Sisal-Glass Fiber-Reinforced Hybrid Composites Using Response Surface Methodology and LINGO Analysis

Table 7

Comparison of experimental and predicted values of response variables.

Exp.	Tensile strength (MPa)			Flexural strength (MPa)			Impact strength (J)
	Exp. value	Predict. value	Error (%)	Exp. value	Predict. value	Error (%)	Exp. value	Predict. value	Error value
1	27.62	27.49	+0.47	134.65	134.88	−0.17	4.20	4.17	+0.71
2	31.89	31.59	+0.94	161.34	160.86	+0.29	3.40	3.44	−1.16
3	27.59	27.22	+1.35	133.84	134.96	−0.82	3.51	3.42	+2.63
4	27.09	26.85	+0.89	127.91	130.01	−1.61	2.75	2.70	+1.85
5	23.92	23.95	−0.12	111.06	111.87	−0.72	4.00	4.04	−0.99
6	23.78	23.6	+0.76	103.21	103.56	−0.33	4.30	4.31	−0.23
7	21.98	21.64	+1.57	100.83	101.24	−0.40	2.75	2.80	−1.78
8	28.50	28.53	−0.10	131.19	132.41	−0.92	3.50	3.46	+1.15
9	25.06	24.62	+1.78	104.59	104.45	+0.13	2.58	2.61	−1.14