Table 6.

The sum of influence given and received on challenges.

Challenges	Di	Rj	Di-Rj	Di + Rj	Overall Ranking
Chn1	5.952	5.293	0.659	11.245	1
Chn2	5.825	5.25	0.575	11.075	3
Chn3	5.694	5.228	0.466	10.922	5
Chn4	5.323	5.295	0.028	10.618	7
Chn5	4.412	4.466	−0.054	8.878	13
Chn6	5.44	5.479	−0.039	10.919	6
Chn7	6.045	5.091	0.954	11.136	2
Chn8	5.843	4.503	1.34	10.346	8
Chn9	5.129	5.165	−0.036	10.294	9
Chn10	5.115	5.816	−0.701	10.931	4
Chn11	4.618	4.311	0.307	8.929	12
Chn12	3.762	4.651	−0.889	8.413	14
Chn13	4.322	5.53	−1.208	9.852	11
Chn14	4.843	5.06	−0.217	9.903	10
Chn15	2.959	4.144	−1.185	7.103	15