Ant Colony Optimisation for Backward Production Scheduling

Table 9

Computer time 𝑇 test.

	BB	ACO
Average	6,382	501
Variance	85,393,845	848,108
Observations	9	9
Hypothesis of mean difference	0
DOF (degrees of freedom)	8
Stat 𝑡	1.9
𝑃 (𝑇≤𝑡) unicaudal	0.047
t critic unicaudal	1.8
𝑃 (𝑇≤𝑡) bicaudal	0.094
𝑡 critic bicaudal	2.3