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Table 4 T-test results for HHO, SA and ABC

From: Vehicle routing problems based on Harris Hawks optimization

  Scenario Method Mean Std. deviation Std. error mean P_value
1 8 customers
3 vehicles
HHO 220.1634 1.229605574158 0.549896329865 0.00
SA 220.1634 2.011608776079 0.899618793489 0.00
ABC 220.1634 2.578602309004 1.153186009974 0.00
2 10 customers
3 vehicles
HHO 269.8302 0.836660026534 0.374165738677 0.00
SA 293.9009 3.209361307176 1.435270009441 0.00
ABC 284.9794 2.683281573000 1.200000000000 0.00
3 14 customers
4 vehicles
HHO 219.2101 0.547722557505 0.244948974278 0.00
SA 278.3779 3.807886552932 1.702938636593 0.00
ABC 276.2006 3.633180424917 1.624807680927 0.00
4 20 customers
4 vehicles
HHO 297.457 0.894427190999 0.400000000000 0.00
SA 385.7173 4.438468204234 1.984943324128 0.00
ABC 334.7739 6.188699378706 2.76767050062 0.00
5 25 customers
5 vehicles
HHO 251.976 5.630275304104 2.517935662403 0.00
SA 376.6583 5.549774770205 2.481934729198 0.00
   ABC 330.3308 3.114482300479 1.392838827718 0.00
6 30 customers 5 vehicles HHO 316.1595 0.547722557505 0.244948974278 0.00
SA 419.6352 7.155417527999 3.200000000000 0.00
ABC 354.6163 6.496152707565 2.905167809267 0.00
7 40 customers
6 vehicles
HHO 319.0379 2.607680962081 1.166190378969 0.00
SA 549.2129 7.463243262818 3.337663853656 0.00
ABC 375.9213 3.563705936241 1.593737745051 0.00
8 50 customers
7 vehicles
HHO 298.1563 1.949358868962 0.871779788708 0.00
SA 626.9496 4.669047011972 2.088061301782 0.00
ABC 377.2894 4.658325879541 2.083266665600 0.00
9 60 customers
7 vehicles
HHO 401.5839 0.894427190999 0.400000000000 0.00
SA 712.1566 1.483239697419 0.663324958071 0.00
ABC 416.0673 5.099019513593 2.280350850198 0.00
10 70 customers
8 vehicles
HHO 423.0535 1.303840481041 0.583095189484 0.00
SA 694.4901 4.207136793593 1.881488772223 0.00
ABC 442.3711 7.127411872482 3.187475490102 0.00