Factorial design study of total petroleum contaminated soil treatment using land farming technique

Table 9 Diagnostics case statistics report of observed and predicted TPH

Standard order	Actual value	Predicted value	Residual	Leverage	Internally studentized residual	Externally studentized residual	Influence on fitted value	Cook’s distance	Run order
1	1346	1335	10.37	0.688	0.334	0.315	0.467	0.020	5
2	1204	1213	−9.51	0.688	−0.306	−0.288	−0.427	0.017	6
3	1183	1183	0.32	0.688	0.010	0.010	0.014	0.000	7
4	1048	1049	−1.18	0.688	−0.038	− 0.036	− 0.053	0.000	8
5	1248	1297	−48.89	0.688	−1.574	−1.773	−2.63	0.454	9
6	1345	1296	48.03	0.688	1.546	1.728	2.56	0.438	10
7	1393	1355	38.03	0.688	1.230	1.278	1.895	0.277	11
8	1304	1342	−37.34	0.688	−1.202	−1.242	−1.843	0.265	12
9	900	900	0.13	0.688	0.004	0.004	0.006	0.000	13
10	630	631	−0.99	0.688	−0.032	−0.030	−0.044	0.000	14
11	749	760	−10.82	0.688	−0.348	0.328	−0.487	0.022	15
12	490	478	11.68	0.688	0.376	0.355	0.527	0.026	16
13	675	636	38.40	0.688	1.236	1.286	1.907	0.280	17
14	450.43	488	−37.53	0.688	−1.208	−1.250	−1.854	0.268	18
15	679	707	−27.71	0.688	−0.892	−0.879	−1.304	0.146	19
16	573	546	26.84	0.688	0.864	0.849	1.259	0.137	20
17	847	804	43.59	0.250	0.906	0.895	0.517	0.023	1
18	723	804	−80.74	0.250	−1.678	−1.950	−1.126	0.078	2
19	782	804	−21.49	0.250	−0.447	−0.423	−0.244	0.006	3
20	862	804	58.63	0.250	1.219	1.263	0.729	0.041	4

ISSN: 2468-2039