Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 39,196 27.64841 16.0433 1 56 county | 39,196 87.69892 96.90158 1 997 month | 39,196 6.755562 3.28769 1 12 day | 39,196 15.76217 8.895809 1 99 year | 39,196 85 0 85 85 -------------+--------------------------------------------------------- hour | 39,196 13.35111 10.39052 0 99 minute | 39,196 27.48002 18.59263 0 99 ve_forms | 39,196 1.486657 .711612 1 36 persons | 39,196 2.653383 1.889233 1 84 land_use | 39,196 1.563195 .532128 1 9 -------------+--------------------------------------------------------- road_fnc | 39,196 4.574574 2.200842 1 9 fed_aid | 39,196 3.889555 2.405753 1 9 cl_tway | 39,196 3.415323 1.516537 1 9 sp_jur | 39,196 .0247219 .3195802 0 9 harm_ev | 39,196 16.42114 11.9902 1 99 -------------+--------------------------------------------------------- man_coll | 39,196 1.140167 1.630506 0 9 rel_junc | 39,196 1.482957 1.091825 1 9 rel_road | 39,196 2.315951 1.85397 1 9 tway_flo | 39,196 1.421319 .8983315 1 9 no_lanes | 39,196 2.385422 1.011182 1 9 -------------+--------------------------------------------------------- sp_limit | 39,196 47.34856 13.66893 0 99 alignmnt | 39,196 1.285948 .5830252 1 9 profile | 39,196 1.443489 1.180354 1 9 pave_typ | 39,196 2.213083 1.428219 1 9 sur_cond | 39,196 1.286534 .7879843 1 9 -------------+--------------------------------------------------------- tra_cont | 39,196 4.151495 11.85328 0 99 t_cont_f | 39,196 .615624 1.306103 0 9 hit_run | 39,196 .0765894 .3767066 0 3 lgt_cond | 39,196 1.846694 .9959195 1 9 weather | 39,196 1.273957 .8995223 1 9 -------------+--------------------------------------------------------- c_m_zone | 39,196 .0225788 .2181354 0 4 not_hour | 39,196 43.39463 42.33606 0 99 not_min | 39,196 52.86573 37.72524 0 99 arr_hour | 39,196 40.75464 41.51655 0 99 arr_min | 39,196 51.20086 37.14637 0 99 -------------+--------------------------------------------------------- sch_bus | 39,196 .0034187 .0583705 0 1 cf1 | 39,196 .4808909 6.435151 0 99 cf2 | 39,196 .4161139 6.392122 0 99 cf3 | 39,196 .4142259 6.390448 0 99 fatals | 39,196 1.118099 .4214652 0 9 -------------+--------------------------------------------------------- day_week | 39,196 4.222956 2.12438 1 9 drunk_dr | 39,196 .4267017 .5418666 0 3 st_case | 39,196 277315.7 160260.1 10002 560136 city | 39,196 1195.588 2017.902 0 9999 milept | 39,191 32121.56 46425.18 0 99999 -------------+--------------------------------------------------------- tway_id | 0 rail | 0 by Jean Roth , jroth@nber.org , 18 Apr 2016