Ant Colony Optimisation for Backward Production Scheduling

Table 8

𝑇 test for the makespan analysis.

	BB	ACO
Average	29.47	31.33
Variance	219.61	265.60
Observations	9	9
Hypothesis of mean difference	0
DOF (degrees of freedom)	16
Stat 𝑡	−0.25
𝑃 (𝑇≤𝑡) uni-caudal	0.40
t critic uni-caudal	1.75
𝑃 (𝑇≤𝑡) bi-caudal	0.80
𝑡 critic bi-caudal	2.12