Study of Microstructure and Properties of 316L with Selective Laser Melting Based on Multivariate Interaction Influence

Table 5

Analysis of variance of density.

Source	Sum of squares	DF	Mean square	F value	value prob > F
Model	2035.96	27	75.41	8.30	<0.0001
A	9.45	1	9.45	1.04	0.3171
B	77.01	1	77.01	8.48	0.0073
C	284.59	1	284.59	31.33	<0.0001
D	617.80	1	617.80	68.01	<0.0001
E	5.29	1	5.29	0.58	0.4524
F	193.92	1	193.92	21.35	<0.0001
AB	2.46	1	2.46	0.27	0.6071
AC	124.75	1	124.75	13.73	0.0010
AD	36.18	1	36.18	3.98	0.0565
AE	9.62	1	9.62	1.06	0.3130
AF	10.56	1	10.56	1.16	0.2907
BC	22.97	1	22.97	2.53	0.1239
BD	75.91	1	75.91	8.36	0.0077
BE	10.67	1	10.67	1.17	0.2884
BF	8.24	1	8.24	0.91	0.3497
CD	40.77	1	40.77	4.49	0.0438
CE	1.84	1	1.84	0.20	0.6560
CF	1.00	1	1.00	0.11	0.7425
DE	166.10	1	166.10	18.29	0.0002
DF	73.58	1	73.58	8.10	0.0085
EF	56.59	1	56.59	6.23	0.0192
Residual	236.18	26	9.08
Lack of fit	167.32	21	7.97	0.58	0.8281
Pure error	68.86	5	13.77
Cor total	2272.13	53