Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 533 43 0 43 43 county | 533 72 0 72 72 month | 533 6.819887 3.472965 1 12 day | 533 15.38274 8.78031 1 31 year | 533 85 0 85 85 -------------+--------------------------------------------------------- hour | 533 13.6454 9.987396 0 99 minute | 533 21.7242 18.12594 0 99 ve_forms | 533 1.333959 .5889894 1 5 persons | 533 2.682927 1.754379 1 16 land_use | 533 1.60788 .4886819 1 2 -------------+--------------------------------------------------------- road_fnc | 533 4.5197 2.003307 3 8 fed_aid | 533 4.052533 2.341409 2 8 cl_tway | 533 3.333959 1.031966 2 8 sp_jur | 533 .0018762 .0433148 0 1 harm_ev | 533 15.65103 12.01386 1 43 -------------+--------------------------------------------------------- man_coll | 533 .5478424 1.060244 0 5 rel_junc | 533 1.170732 .4618193 1 3 rel_road | 533 1.917448 1.461516 1 6 tway_flo | 533 1.305816 .5259291 1 4 no_lanes | 533 2.242026 .5877487 1 6 -------------+--------------------------------------------------------- sp_limit | 533 37.65478 6.959669 0 55 alignmnt | 533 1.129456 .3360192 1 2 profile | 533 1.15197 .4174088 1 3 pave_typ | 533 1.866792 .3456013 1 3 sur_cond | 533 1.187617 .4447654 1 5 -------------+--------------------------------------------------------- tra_cont | 533 3.478424 10.8969 0 50 t_cont_f | 533 .4840525 1.104599 0 3 hit_run | 533 .2570356 .6572129 0 2 lgt_cond | 533 1.966229 1.019907 1 9 weather | 533 1.161351 .4631614 1 8 -------------+--------------------------------------------------------- c_m_zone | 533 .0018762 .0433148 0 1 not_hour | 533 15.97373 36.45178 0 99 not_min | 533 15.97373 36.45178 0 99 arr_hour | 533 15.97373 36.45178 0 99 arr_min | 533 15.97373 36.45178 0 99 -------------+--------------------------------------------------------- sch_bus | 533 0 0 0 0 cf1 | 533 .2026266 4.292001 0 99 cf2 | 533 .1857411 4.288166 0 99 cf3 | 533 .1857411 4.288166 0 99 fatals | 533 1.125704 .4916174 1 6 -------------+--------------------------------------------------------- day_week | 533 4.268293 2.204163 1 7 drunk_dr | 533 .3639775 .5191599 0 2 st_case | 533 430299 176.8309 430001 430600 city | 533 545.3133 338.434 10 1060 milept | 533 399.2251 4337.939 0 99999 -------------+--------------------------------------------------------- tway_id | 0 rail | 0 by Jean Roth , jroth@nber.org , 18 Apr 2016