TABLE 7 Average Trip Lengths by Trip Purpose,,,,,, Sample,HBW,,HBO,,NHB, ,Unweighted,Weighted,Unweighted,Weighted,Unweighted,Weighted National sample,21.1,21.5,17.3*,17.7*,18.6*,18.6* Similar-SE-states sample,21.0,21.7,17.1*,17.6*,18.3*,18.8* KY standard sample,23.7,24.2,20.1,20.3,20.6,20.3 KY add-on sample,25.6,25.1,21.3,20.4,18.7,18.0 Key: HBW = home-based work; HBO = home-based other; NHB = nonhome-based; * indicates the value is significantly different from the Kentucky standard sample value at the 0.05 level of significance. ,,,,,, Sources: Calculations based on data from 2001 NHTS national sample and Kentucky add-on sample.,,,,,, ,,,,,, ,,,,,,