Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 39,836 27.15024 16.10293 1 56 county | 39,836 85.21907 90.89615 0 997 month | 39,836 6.689904 3.323843 1 12 day | 39,836 15.63377 8.886939 1 99 year | 39,836 90 0 90 90 -------------+--------------------------------------------------------- hour | 39,836 13.20577 10.62788 0 99 minute | 39,836 27.75602 18.60272 0 99 ve_forms | 39,836 1.488402 .7108625 1 38 persons | 39,836 2.705518 1.945914 1 88 fed_aid | 39,836 3.098454 1.356831 1 9 -------------+--------------------------------------------------------- road_fnc | 39,836 8.009188 5.721582 1 99 route | 39,836 3.548424 1.712245 1 9 sp_jur | 39,836 .0293202 .3443588 0 9 harm_ev | 39,836 16.68491 12.29561 1 99 man_coll | 39,836 1.160935 1.668928 0 9 -------------+--------------------------------------------------------- rel_junc | 39,836 1.464178 1.050523 1 9 rel_road | 39,836 2.406517 1.926885 1 9 traf_flo | 39,836 1.56705 1.220838 1 9 no_lanes | 39,836 2.494477 1.246557 1 9 sp_limit | 39,836 48.13094 13.68541 0 99 -------------+--------------------------------------------------------- alignmnt | 39,836 1.280375 .599349 1 9 profile | 39,836 1.470102 1.201557 1 9 pave_typ | 39,836 2.198439 1.366331 1 9 sur_cond | 39,836 1.259941 .7838798 1 9 tra_cont | 39,836 4.527161 12.18517 0 99 -------------+--------------------------------------------------------- t_cont_f | 39,836 .652199 1.282905 0 9 hit_run | 39,836 .0800281 .3861175 0 3 lgt_cond | 39,836 1.853047 1.010597 1 9 weather | 39,836 1.256979 .9038127 1 9 c_m_zone | 39,836 .0235967 .2130321 0 4 -------------+--------------------------------------------------------- not_hour | 39,836 39.74159 41.20888 0 99 not_min | 39,836 50.45293 36.54005 0 99 arr_hour | 39,836 36.9636 40.05712 0 99 arr_min | 39,836 48.6165 35.85747 0 99 hosp_hr | 39,836 54.53359 45.91368 0 99 -------------+--------------------------------------------------------- hosp_mn | 39,836 59.46606 42.75348 0 99 sch_bus | 39,836 .0026609 .051516 0 1 cf1 | 39,836 .7640576 7.27407 0 99 cf2 | 39,836 .5060498 7.005461 0 99 cf3 | 39,836 .4974646 6.997697 0 99 -------------+--------------------------------------------------------- fatals | 39,836 1.119565 .4184016 1 10 day_week | 39,836 4.226077 2.139282 1 9 drunk_dr | 39,836 .4251431 .5379014 0 3 st_case | 39,836 272346.3 160799.9 10001 560107 milept | 39,836 11876.69 32015.82 0 99999 -------------+--------------------------------------------------------- city | 39,836 1040.398 1799.906 0 9999 tway_id | 0 rail | 0 by Jean Roth , jroth@nber.org , 18 Apr 2016