Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 548 43 0 43 43 county | 548 72 0 72 72 month | 548 6.381387 3.593436 1 12 day | 548 15.59854 8.683726 1 31 year | 548 88 0 88 88 -------------+--------------------------------------------------------- hour | 548 13.9562 7.184809 0 23 minute | 548 23.38504 17.02798 0 55 ve_forms | 548 1.366788 .6065992 1 5 persons | 548 2.576642 1.545046 1 13 fed_aid | 548 3.666058 1.456178 1 9 -------------+--------------------------------------------------------- road_fnc | 548 10.51825 10.05022 1 99 route | 548 4.326642 1.189942 1 9 sp_jur | 548 .0054745 .0738542 0 1 harm_ev | 548 14.7646 11.11718 1 42 man_coll | 548 .7737226 1.353404 0 6 -------------+--------------------------------------------------------- rel_junc | 548 1.202555 .6658508 1 9 rel_road | 548 1.965328 1.5131 1 6 traf_flo | 548 1.507299 .8345497 1 4 no_lanes | 548 2.656934 1.192223 1 9 sp_limit | 548 58.21715 25.85451 15 99 -------------+--------------------------------------------------------- alignmnt | 548 1.173358 .4959268 1 9 profile | 548 1.255474 .8092626 1 9 pave_typ | 548 1.974453 .4792635 1 9 sur_cond | 548 1.217153 .5911578 1 9 tra_cont | 548 .9014599 4.867284 0 50 -------------+--------------------------------------------------------- t_cont_f | 548 .2372263 .9181897 0 9 hit_run | 548 .1952555 .5957001 0 3 lgt_cond | 548 1.959854 .9760541 1 9 weather | 548 1.20073 .5830007 1 9 c_m_zone | 548 0 0 0 0 -------------+--------------------------------------------------------- not_hour | 548 20.9927 39.18404 0 99 not_min | 548 22.27555 39.46654 0 99 arr_hour | 548 20.7573 39.06692 0 99 arr_min | 548 21.66241 39.28931 0 99 hosp_hr | 548 5.638686 22.89985 0 99 -------------+--------------------------------------------------------- hosp_mn | 548 5.635036 22.89755 0 99 sch_bus | 548 .0018248 .0427179 0 1 cf1 | 548 .2992701 4.386059 0 99 cf2 | 548 .1806569 4.22907 0 99 cf3 | 548 .1806569 4.22907 0 99 -------------+--------------------------------------------------------- fatals | 548 1.067518 .278747 1 4 day_week | 548 4.24635 2.268835 1 7 drunk_dr | 548 .3540146 .5497567 0 2 st_case | 548 430306.6 174.1708 430002 430600 milept | 548 5242.595 21600.41 0 99999 -------------+--------------------------------------------------------- city | 548 514.9142 329.0533 10 1060 tway_id | 0 rail | 0 by Jean Roth , jroth@nber.org , 18 Apr 2016