Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 37,140 27.83691 16.03404 1 56 county | 37,140 88.91408 92.17379 0 999 month | 37,140 6.807943 3.357333 1 12 day | 37,140 15.75366 8.886571 1 99 hour | 37,140 13.3532 10.4585 0 99 -------------+--------------------------------------------------------- minute | 37,140 28.35067 18.71982 0 99 ve_forms | 37,140 1.529887 .7459888 1 21 persons | 37,140 2.710447 2.059131 1 99 peds | 37,140 .180587 .6898034 0 98 nhs | 37,140 .3441572 .6897874 0 9 -------------+--------------------------------------------------------- road_fnc | 37,140 7.834222 7.104514 1 99 route | 37,140 3.543376 1.827956 1 9 sp_jur | 37,140 .0299677 .3478438 0 9 harm_ev | 37,140 17.00363 12.69414 1 99 man_coll | 37,140 1.254416 1.721635 0 9 -------------+--------------------------------------------------------- rel_junc | 37,140 1.789742 2.61602 1 99 rel_road | 37,140 2.576764 4.950543 1 99 traf_flo | 37,140 1.494319 .9757252 1 9 no_lanes | 37,140 2.491357 1.212057 1 9 sp_limit | 37,140 50.50609 14.51403 0 99 -------------+--------------------------------------------------------- alignmnt | 37,140 1.287884 .6825467 1 9 profile | 37,140 1.45105 1.132062 1 9 pave_typ | 37,140 2.108131 1.153523 1 9 sur_cond | 37,140 1.240011 .7998584 1 9 tra_cont | 37,140 4.246419 11.39594 0 99 -------------+--------------------------------------------------------- t_cont_f | 37,140 .6817986 1.329011 0 9 hit_run | 37,140 .0666667 .3535747 0 3 lgt_cond | 37,140 1.774663 1.02723 1 9 weather | 37,140 1.225983 .8807934 1 9 c_m_zone | 37,140 .0267367 .2144797 0 4 -------------+--------------------------------------------------------- not_hour | 37,140 41.15293 41.63742 0 99 not_min | 37,140 51.34281 37.06943 0 99 arr_hour | 37,140 37.29884 40.06742 0 99 arr_min | 37,140 49.722 36.53784 0 99 hosp_hr | 37,140 51.81349 45.75403 0 99 -------------+--------------------------------------------------------- hosp_mn | 37,140 57.27399 42.61611 0 99 sch_bus | 37,140 .0039311 .0625757 0 1 cf1 | 37,140 .8938341 6.385513 0 99 cf2 | 37,140 .3399838 5.609711 0 99 cf3 | 37,140 .3155089 5.573062 0 99 -------------+--------------------------------------------------------- fatals | 37,140 1.123236 .450009 1 22 day_week | 37,140 4.159693 2.108936 1 9 drunk_dr | 37,140 .4019925 .6207383 0 7 st_case | 37,140 279069 160271.9 10001 560162 city | 37,140 998.1948 1788.14 0 9999 -------------+--------------------------------------------------------- milept | 37,140 12642.44 32875.9 0 99999 year | 37,140 1999 0 1999 1999 tway_id | 0 rail | 0 latitude | 0 -------------+--------------------------------------------------------- longitud | 0 by Jean Roth , jroth@nber.org , 18 Apr 2016