Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 450 43 0 43 43 county | 450 72 0 72 72 month | 450 6.355556 3.647347 1 12 day | 450 15.78222 9.166446 1 31 year | 450 82 0 82 82 -------------+--------------------------------------------------------- hour | 450 15.02444 11.39264 0 99 minute | 450 23.82889 18.18207 0 99 ve_forms | 450 1.291111 .6416579 1 9 persons | 450 2.491111 1.519337 1 12 land_use | 450 1.54 .4989521 1 2 -------------+--------------------------------------------------------- road_fnc | 450 5.017778 2.226515 2 8 fed_aid | 450 4.933333 2.458565 2 8 cl_tway | 450 3.553333 .7914071 3 8 sp_jur | 450 .0022222 .0471405 0 1 harm_ev | 450 15.42444 12.34543 1 99 -------------+--------------------------------------------------------- man_coll | 450 .5977778 1.371194 0 9 rel_junc | 450 1.191111 .5494773 1 6 rel_road | 450 2.153333 1.796073 1 9 tway_flo | 450 1.317778 .6700028 1 4 no_lanes | 450 2.506667 .8860211 1 6 -------------+--------------------------------------------------------- sp_limit | 450 35.63111 9.895531 15 99 alignmnt | 450 1.14 .3473732 1 2 profile | 450 1.22 .4200435 1 3 pave_typ | 450 1.844444 .3628369 1 2 sur_cond | 450 1.171111 .6003422 1 9 -------------+--------------------------------------------------------- tra_cont | 450 3.733333 12.61791 0 99 t_cont_f | 450 .4733333 1.199647 0 9 hit_run | 450 .2688889 .6781089 0 2 lgt_cond | 450 2.166667 1.313371 1 9 weather | 450 1.008889 .0939654 1 2 -------------+--------------------------------------------------------- c_m_zone | 450 0 0 0 0 not_hour | 450 9.46 29.13649 0 99 not_min | 450 9.46 29.13649 0 99 arr_hour | 450 9.46 29.13649 0 99 arr_min | 450 9.46 29.13649 0 99 -------------+--------------------------------------------------------- sch_bus | 450 0 0 0 0 cf1 | 450 0 0 0 0 cf2 | 450 0 0 0 0 cf3 | 450 0 0 0 0 fatals | 450 1.066667 .340313 1 4 -------------+--------------------------------------------------------- day_week | 450 4.148889 2.243041 1 7 drunk_dr | 450 .28 .4829383 0 2 st_case | 450 430227.9 131.3006 430001 430454 city | 450 522.1467 324.9002 20 1060 milept | 426 336.3756 4844.239 0 99999 -------------+--------------------------------------------------------- tway_id | 0 rail | 0 by Jean Roth , jroth@nber.org , 18 Apr 2016