Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 37,107 27.90393 15.96146 1 56 county | 37,107 89.52319 93.5379 0 999 month | 37,107 6.774867 3.382413 1 12 day | 37,107 15.72598 8.982672 1 99 hour | 37,107 13.43191 10.56398 0 99 -------------+--------------------------------------------------------- minute | 37,107 28.37634 18.68099 0 99 ve_forms | 37,107 1.533996 .8256954 1 42 persons | 37,107 2.724553 1.998717 1 66 nhs | 37,107 .3301533 .5657895 0 9 road_fnc | 37,107 7.855957 6.855228 1 99 -------------+--------------------------------------------------------- route | 37,107 3.530358 1.796696 1 9 sp_jur | 37,107 .0293206 .3593692 0 9 harm_ev | 37,107 16.88905 12.4112 1 99 man_coll | 37,107 1.245291 1.704963 0 9 rel_junc | 37,107 1.74711 2.712638 1 99 -------------+--------------------------------------------------------- rel_road | 37,107 2.582963 5.17566 1 99 traf_flo | 37,107 1.491093 .9954595 1 9 no_lanes | 37,107 2.50225 1.225972 1 9 sp_limit | 37,107 50.22392 14.37886 0 99 alignmnt | 37,107 1.278923 .643371 1 9 -------------+--------------------------------------------------------- profile | 37,107 1.499394 1.272274 1 9 pave_typ | 37,107 2.134206 1.224202 1 9 sur_cond | 37,107 1.258523 .8043867 1 9 tra_cont | 37,107 4.281079 11.29548 0 99 t_cont_f | 37,107 .6794675 1.299901 0 9 -------------+--------------------------------------------------------- hit_run | 37,107 .0671841 .3547428 0 3 lgt_cond | 37,107 1.771984 1.013488 1 9 weather | 37,107 1.25095 .9018142 1 9 c_m_zone | 37,107 .0239577 .2067229 0 4 not_hour | 37,107 38.20201 40.47165 0 99 -------------+--------------------------------------------------------- not_min | 37,107 49.02859 36.27185 0 99 arr_hour | 37,107 35.01401 38.97779 0 99 arr_min | 37,107 48.0024 35.98128 0 99 hosp_hr | 37,107 48.80492 45.7606 0 99 hosp_mn | 37,107 54.16905 43.04785 0 99 -------------+--------------------------------------------------------- sch_bus | 37,107 .0032608 .0570114 0 1 cf1 | 37,107 .6128493 4.930395 0 99 cf2 | 37,107 .1859757 4.137186 0 99 cf3 | 37,107 .1719891 4.110276 0 99 fatals | 37,107 1.118414 .421735 1 8 -------------+--------------------------------------------------------- day_week | 37,107 4.157544 2.09487 1 9 drunk_dr | 37,107 .3101571 .4840863 0 3 st_case | 37,107 279736.2 159557.7 10001 560129 milept | 37,107 13021.32 33306.93 0 99999 city | 37,107 1012.533 1800.189 0 9999 -------------+--------------------------------------------------------- year | 37,107 1998 0 1998 1998 tway_id | 0 rail | 0 peds | 37,107 .1848438 .4616237 0 13 by Jean Roth , jroth@nber.org , 18 Apr 2016