Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 40,741 27.19072 16.06529 1 56 county | 40,741 85.88746 91.25989 0 999 month | 40,741 6.754326 3.373465 1 12 day | 40,741 15.66078 8.857088 1 99 year | 40,741 89 0 89 89 -------------+--------------------------------------------------------- hour | 40,741 13.328 10.42917 0 99 minute | 40,741 27.62453 18.57445 0 99 ve_forms | 40,741 1.494072 .7104283 1 43 persons | 40,741 2.696718 1.927991 1 87 fed_aid | 40,741 3.114774 1.393999 1 9 -------------+--------------------------------------------------------- road_fnc | 40,741 8.018458 5.779448 1 99 route | 40,741 3.568862 1.729711 1 9 sp_jur | 40,741 .0252326 .3211594 0 9 harm_ev | 40,741 16.53825 12.16265 1 99 man_coll | 40,741 1.168994 1.666039 0 9 -------------+--------------------------------------------------------- rel_junc | 40,741 1.48882 1.096074 1 9 rel_road | 40,741 2.409735 1.946734 1 9 traf_flo | 40,741 1.509266 1.130096 1 9 no_lanes | 40,741 2.507081 1.235274 1 9 sp_limit | 40,741 48.19312 13.94231 0 99 -------------+--------------------------------------------------------- alignmnt | 40,741 1.271226 .5836287 1 9 profile | 40,741 1.435605 1.10952 1 9 pave_typ | 40,741 2.209347 1.3857 1 9 sur_cond | 40,741 1.29069 .8094975 1 9 tra_cont | 40,741 4.07371 11.57682 0 99 -------------+--------------------------------------------------------- t_cont_f | 40,741 .6050661 1.232153 0 9 hit_run | 40,741 .0776368 .3805996 0 3 lgt_cond | 40,741 1.838664 .999712 1 9 weather | 40,741 1.271496 .9136502 1 9 c_m_zone | 40,741 .0245698 .225868 0 4 -------------+--------------------------------------------------------- not_hour | 40,741 39.34516 41.05371 0 99 not_min | 40,741 49.85778 36.65276 0 99 arr_hour | 40,741 36.68948 39.91396 0 99 arr_min | 40,741 48.05454 35.97952 0 99 hosp_hr | 40,741 54.84934 46.00323 0 99 -------------+--------------------------------------------------------- hosp_mn | 40,741 59.56052 42.9977 0 99 sch_bus | 40,741 .0027245 .0521265 0 1 cf1 | 40,741 .6125279 6.392718 0 99 cf2 | 40,741 .3856803 6.122527 0 99 cf3 | 40,741 .3792249 6.114464 0 99 -------------+--------------------------------------------------------- fatals | 40,741 1.118824 .421611 1 21 day_week | 40,741 4.231659 2.125306 1 9 drunk_dr | 40,741 .4164355 .536648 0 6 st_case | 40,741 272782.6 160405.5 10001 560114 milept | 40,741 11274.89 31279.92 0 99999 -------------+--------------------------------------------------------- city | 40,741 1030.693 1790.236 0 9999 tway_id | 0 rail | 0 by Jean Roth , jroth@nber.org , 18 Apr 2016