Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 505 43 0 43 43 county | 505 72 0 72 72 month | 505 6.819802 3.4962 1 12 day | 505 15.4297 8.896646 1 31 year | 505 84 0 84 84 -------------+--------------------------------------------------------- hour | 505 14.74059 8.833223 0 99 minute | 505 23.25941 17.00613 0 99 ve_forms | 505 1.356436 .6006636 1 5 persons | 505 2.754455 1.672343 1 10 land_use | 505 1.49901 .5004948 1 2 -------------+--------------------------------------------------------- road_fnc | 505 4.576238 2.257841 2 8 fed_aid | 505 4.320792 2.535475 2 8 cl_tway | 505 3.465347 1.088945 3 8 sp_jur | 505 .0039604 .0628692 0 1 harm_ev | 505 15.22376 11.26747 1 44 -------------+--------------------------------------------------------- man_coll | 505 .6871287 1.277527 0 6 rel_junc | 505 1.308911 .645205 1 5 rel_road | 505 1.807921 1.391847 1 9 tway_flo | 505 1.411881 .7431282 1 9 no_lanes | 505 2.445545 .838972 1 6 -------------+--------------------------------------------------------- sp_limit | 505 39.6099 8.655688 10 99 alignmnt | 505 1.148515 .3559622 1 2 profile | 505 1.227723 .5470191 1 3 pave_typ | 505 1.883168 .3395461 1 4 sur_cond | 505 1.174257 .4379456 1 5 -------------+--------------------------------------------------------- tra_cont | 505 3.863366 11.11516 0 50 t_cont_f | 505 .5940594 1.193386 0 3 hit_run | 505 .2930693 .696684 0 2 lgt_cond | 505 1.966337 1.027815 1 5 weather | 505 1.152475 .3598374 1 2 -------------+--------------------------------------------------------- c_m_zone | 505 .0039604 .0628692 0 1 not_hour | 505 16.07525 36.54697 0 99 not_min | 505 16.07525 36.54697 0 99 arr_hour | 505 16.07525 36.54697 0 99 arr_min | 505 16.07525 36.54697 0 99 -------------+--------------------------------------------------------- sch_bus | 505 0 0 0 0 cf1 | 505 .0970297 .5845999 0 6 cf2 | 505 .0059406 .1334982 0 3 cf3 | 505 0 0 0 0 fatals | 505 1.079208 .3853253 1 6 -------------+--------------------------------------------------------- day_week | 505 4.138614 2.252995 1 7 drunk_dr | 505 .3663366 .5141408 0 2 st_case | 505 430254.5 147.1699 430001 430508 city | 505 520.6812 323.1133 10 1060 milept | 504 285.8631 731.1207 0 13137 -------------+--------------------------------------------------------- tway_id | 0 rail | 0 by Jean Roth , jroth@nber.org , 18 Apr 2016