TABLE 12 Comparison of Updated and Observed Average Trip Lengths,,,,,,, ,Sample,HBW,,HBO,,NHB, ,,Mean,SE of mean,Mean,SE of mean,Mean,SE of mean Unweighted,KY add-on sample,25.6,0.604,21.3,0.295,18.7,0.403 ,KY standard sample,23.7,1.692,20.1,0.690,20.6,0.685 ,Updated data,25.4,0.422,21.1,0.289,19.2,0.388 ,Similar-SE-states sample,21.0,0.473,17.1,0.188,18.3,0.285 ,National sample,21.1,0.194,17.3,0.082,18.6,0.120 Weighted,KY add-on sample,25.1,0.610,20.4,0.303,18.0,0.411 ,KY standard sample,24.2,1.705,20.3,0.711,20.3,0.702 ,Updated data,25.0,0.428,20.4,0.297,18.6,0.396 ,Similar-SE-states sample,21.7,0.492,17.6,0.197,18.8,0.308 ,National sample,21.5,0.199,17.7,0.088,18.6,0.125 Key: HBW = home-based work; HBO = home-based other; NHB = nonhome-based; SE = standard error.,,,,,,, Sources: Calculations based on data from 2001 NHTS national sample and Kentucky add-on sample.,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,,