Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 34,172 27.52367 16.2071 1 56 county | 34,172 90.8068 95.50772 1 820 month | 34,172 6.650416 3.383871 1 12 day | 34,172 15.70672 8.879151 1 99 hour | 34,172 13.1997 10.22733 0 99 -------------+--------------------------------------------------------- minute | 34,172 28.81576 18.61986 0 99 ve_total | 34,172 1.519724 .8361703 1 51 persons | 34,172 2.473077 1.892661 1 66 peds | 34,172 .1686468 .4510218 0 22 nhs | 34,172 .3418003 .7553381 0 9 -------------+--------------------------------------------------------- road_fnc | 34,172 8.59739 8.701732 1 99 route | 34,172 3.54928 1.741882 1 9 sp_jur | 34,172 .0233525 .285504 0 9 harm_ev | 34,172 18.32254 13.67564 1 99 man_coll | 34,172 1.50199 4.106363 0 99 -------------+--------------------------------------------------------- rel_junc | 34,172 1.777479 2.737691 1 99 rel_road | 34,172 2.47577 4.045254 1 99 traf_flo | 34,172 1.68205 1.238998 1 9 no_lanes | 34,172 2.514866 1.195715 1 9 sp_limit | 34,172 50.14424 15.03968 0 99 -------------+--------------------------------------------------------- alignmnt | 34,172 1.316897 .6965956 1 9 profile | 34,172 1.467108 1.171716 1 9 pave_typ | 34,172 2.090922 1.051378 1 9 sur_cond | 34,172 1.28617 .8906524 1 9 tra_cont | 34,172 4.361056 11.50596 0 99 -------------+--------------------------------------------------------- t_cont_f | 34,172 .6879902 1.329849 0 9 hit_run | 34,172 .089986 .443339 0 5 lgt_cond | 34,172 1.820496 1.045551 1 9 weather1 | 34,172 1.254273 .943017 1 9 weather2 | 34,172 .0150123 .2465589 0 8 -------------+--------------------------------------------------------- c_m_zone | 34,172 .0292637 .2523911 0 4 not_hour | 34,172 42.4487 42.2942 0 99 not_min | 34,172 52.27824 37.72932 0 99 arr_hour | 34,172 41.02701 41.82348 0 99 arr_min | 34,172 52.90685 37.92278 0 99 -------------+--------------------------------------------------------- hosp_hr | 34,172 50.30894 46.45195 0 99 hosp_mn | 34,172 55.4904 44.1969 0 99 sch_bus | 34,172 .0039213 .0624986 0 1 cf1 | 34,172 .8048987 4.727159 0 99 cf2 | 34,172 .1441531 3.293012 0 99 -------------+--------------------------------------------------------- cf3 | 34,172 .1070174 3.184078 0 99 fatals | 34,172 1.095136 .3789751 1 17 day_week | 34,172 4.143919 2.115177 1 9 drunk_dr | 34,172 .3354208 .492946 0 4 st_case | 34,172 275938.2 161988.7 10001 560139 -------------+--------------------------------------------------------- city | 34,172 1112.117 1849.409 0 9999 milept | 34,172 15245.08 35627.87 0 99999 year | 34,172 2008 0 2008 2008 tway_id | 0 tway_id2 | 0 -------------+--------------------------------------------------------- rail | 0 latitude | 33,689 36.63387 5.151521 19.04179 66.73546 longitud | 33,691 -91.93702 14.814 -170.5122 -67.08132 ve_forms | 34,172 1.4825 .7950664 1 51 weather | 34,172 1.253746 .9410466 1 9 by Jean Roth , jroth@nber.org , 18 Apr 2016