Table 11.

Statistical analysis of compressive strength MLPNN model.

Statistical Analysis	MLPNN	MLPNN-Adaboost	MLPNN-Bagging
Average	28.88	28.31	28.85
Minimum	2.50	3.59	6.66
Maximum	58.23	56.34	57.56
No. of entries below 10 MPa	8	4	3
No. of entries from 10 to 20 MPa	10	16	15
No. of entries from 20 to 30 MPa	24	24	27
No. of entries from 30 to 40 MPa	23	26	21
No. of entries from 40 to 50 MPa	12	5	9
No. of entries from 50 to 60 MPa	3	5	5
No. of entries from 60 to 70 MPa	0	0	0
Total testing data points	80	80	80
Mean below 10 MPa	0.84	0.35	0.32
Mean in range of 10 to 20 MPa	1.67	2.89	2.55
Mean in range of 20 to 30 MPa	7.35	7.31	8.34
Mean in range of 30 to 40 MPa	10.30	11.65	9.44
Mean in range of 40 to 50 MPa	6.56	2.68	4.73
Mean in range of 50 to 60 MPa	2.16	3.43	3.45
Mean in range of 60 to 70 MPa	0.00	0.00	0.00