Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 37,976 27.77823 16.02197 1 56 county | 37,976 87.63648 95.1073 1 997 month | 37,976 6.823704 3.311077 1 12 day | 37,976 15.55606 8.9013 1 99 year | 37,976 83 0 83 83 -------------+--------------------------------------------------------- hour | 37,976 13.0849 10.19022 0 99 minute | 37,976 30.11449 22.93498 0 99 ve_forms | 37,976 1.451074 .6510658 1 22 persons | 37,976 2.615231 1.831548 1 82 land_use | 37,976 1.572414 .5836225 1 9 -------------+--------------------------------------------------------- road_fnc | 37,976 4.595692 2.204814 1 9 fed_aid | 37,976 3.918738 2.426197 1 9 cl_tway | 37,976 3.433221 1.506332 1 9 sp_jur | 37,976 .0282547 .3559957 0 9 harm_ev | 37,976 16.43757 12.09541 1 99 -------------+--------------------------------------------------------- man_coll | 37,976 1.07618 1.607312 0 9 rel_junc | 37,976 1.498841 1.111529 1 9 rel_road | 37,976 2.313198 1.820741 1 9 tway_flo | 37,976 1.424742 .9202128 1 9 no_lanes | 37,976 2.414973 1.069875 1 9 -------------+--------------------------------------------------------- sp_limit | 37,976 48.13545 14.80213 0 99 alignmnt | 37,976 1.287998 .6084585 1 9 profile | 37,976 1.454708 1.17604 1 9 pave_typ | 37,976 2.224695 1.454436 1 9 sur_cond | 37,976 1.290763 .8188593 1 9 -------------+--------------------------------------------------------- tra_cont | 37,976 3.972825 11.94292 0 99 t_cont_f | 37,976 .5909522 1.321956 0 9 hit_run | 37,976 .0770487 .3787842 0 3 lgt_cond | 37,976 1.887297 1.007851 1 9 weather | 37,976 1.266352 .8854741 1 9 -------------+--------------------------------------------------------- c_m_zone | 37,976 .0231199 .2348056 0 4 not_hour | 37,976 52.36694 44.51092 0 99 not_min | 37,976 59.73049 39.66827 0 99 arr_hour | 37,976 49.14069 44.16355 0 99 arr_min | 37,976 57.46161 39.48583 0 99 -------------+--------------------------------------------------------- sch_bus | 37,976 .0035022 .0590765 0 1 cf1 | 37,976 .6875658 7.632694 0 99 cf2 | 37,976 .5839214 7.564925 0 99 cf3 | 37,976 .5813408 7.564145 0 99 fatals | 37,976 1.121471 .432658 1 11 -------------+--------------------------------------------------------- day_week | 37,976 4.274963 2.131693 1 9 drunk_dr | 37,976 .4346956 .5446259 0 4 st_case | 37,976 278565.8 160092.5 10001 560152 city | 37,976 1213.933 2033.523 0 9999 milept | 37,855 31088.24 45979.72 0 99999 -------------+--------------------------------------------------------- tway_id | 0 rail | 0 by Jean Roth , jroth@nber.org , 18 Apr 2016