A New Method Based on TOPSIS and Response Surface Method for MCDM Problems with Interval Numbers

Table 2

Experimental design results of attribute factors.

Exp. number	Factor levels
	IN	EP	RP	RC
1	5, 6]	6, 7]	5, 7]	0.4, 0.6]
2	5, 6]	6, 7]	5, 7]	1.5, 2.0]
3	5, 6]	6, 7]	3, 4]	0.4, 0.6]
4	5, 6]	6, 7]	3, 4]	1.5, 2.0]
5	5, 6]	3, 5]	5, 7]	0.4, 0.6]
6	5, 6]	3, 5]	5, 7]	1.5, 2.0]
7	5, 6]	3, 5]	3, 4]	0.4, 0.6]
8	5, 6]	3, 5]	3, 4]	1.5, 2.0]
9	10, 11]	6, 7]	5, 7]	0.4, 0.6]
10	10, 11]	6, 7]	5, 7]	1.5, 2.0]
11	10, 11]	6, 7]	3, 4]	0.4, 0.6]
12	10, 11]	6, 7]	3, 4]	1.5, 2.0]
13	10, 11]	3, 5]	5, 7]	0.4, 0.6]
14	10, 11]	3, 5]	5, 7]	1.5, 2.0]
15	10, 11]	3, 5]	3, 4]	0.4, 0.6]
16	10, 11]	3, 5]	3, 4]	1.5, 2.0]