Table 3: Analysis of percent errors in travel times predicted by the conventioal and the proposed k-NN method.

Classification Statistics Tuesday (Feb. 5th) Wednesday (Feb. 6th)
Con. k-NN Pro. k-NN Con. k-NN Pro. k-NN
Whole period
(7:00–9:00 a.m.)		 Mean 8.5 7.1 16.0 10.0
Variance 38.8 39.4 139.8 75.7
Sample 25 25
t-stat. 0.82 2.54
Cri. t-stat. at 95% con. int. 1.71 1.71
p-value 0.21 0.009
Transiton period
(7:20–8:00 a.m.)		 Mean 11.8 6.7 18.2 12.7
Variance 44.0 32.3 156.7 113.6
Sample 8 8
t-stat. 2.18 3.84
Cri. t-stat. at 95% con. int. 1.89 1.89
p-value 0.03 0.003

Note: con. = conventional; pro. = proposed; Cri.=critical; stat. = statistic; con. int.: confidence interval.