Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 463 43 0 43 43 county | 463 72 0 72 72 month | 463 6.367171 3.552202 1 12 day | 463 15.31533 8.759406 1 31 year | 463 91 0 91 91 -------------+--------------------------------------------------------- hour | 463 13.65659 8.326716 0 99 minute | 463 22.69114 17.50688 0 99 ve_forms | 463 1.358531 .5893789 1 5 persons | 463 2.565875 1.473974 1 12 fed_aid | 463 3.410367 1.62104 1 5 -------------+--------------------------------------------------------- road_fnc | 463 8.853132 5.296412 1 16 route | 463 3.362851 1.263063 1 6 sp_jur | 463 0 0 0 0 harm_ev | 463 15.66091 11.70468 1 43 man_coll | 463 .8034557 1.425733 0 6 -------------+--------------------------------------------------------- rel_junc | 463 1.079914 .3016664 1 4 rel_road | 463 2.412527 2.128048 1 8 traf_flo | 463 1.980562 .7712713 1 4 no_lanes | 463 2.717063 1.230858 1 9 sp_limit | 463 40.97192 9.930782 15 55 -------------+--------------------------------------------------------- alignmnt | 463 1.181425 .3857872 1 2 profile | 463 1.315335 .6171452 1 4 pave_typ | 463 1.902808 .3909871 1 4 sur_cond | 463 1.136069 .3494821 1 3 tra_cont | 463 .8444924 4.350649 0 50 -------------+--------------------------------------------------------- t_cont_f | 463 .2419006 .8150467 0 3 hit_run | 463 .0928726 .4187346 0 2 lgt_cond | 463 2.017279 .9441799 1 5 weather | 463 1.131749 .338584 1 2 c_m_zone | 463 .0172786 .1304485 0 1 -------------+--------------------------------------------------------- not_hour | 463 2.241901 5.658176 0 23 not_min | 463 4.922246 12.53508 0 58 arr_hour | 463 2.304536 5.750223 0 23 arr_min | 463 5.606911 13.57092 0 59 hosp_hr | 463 .0086393 .1858958 0 4 -------------+--------------------------------------------------------- hosp_mn | 463 .0323974 .6971091 0 15 sch_bus | 463 0 0 0 0 cf1 | 463 .0302376 .6506352 0 14 cf2 | 463 0 0 0 0 cf3 | 463 0 0 0 0 -------------+--------------------------------------------------------- fatals | 463 1.069114 .2859946 1 3 day_week | 463 4.12959 2.157352 1 7 drunk_dr | 463 .3693305 .5462277 0 2 st_case | 463 430237 136.2631 430001 430474 milept | 463 3032.231 16504.08 0 99999 -------------+--------------------------------------------------------- city | 463 523.1015 329.7718 10 1060 tway_id | 0 rail | 0 peds | 463 .4492441 .6181897 0 4 by Jean Roth , jroth@nber.org , 18 Apr 2016