Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 30,862 27.7529 16.17626 1 56 county | 30,862 90.88086 94.99807 1 999 month | 30,862 6.596753 3.353398 1 12 day | 30,862 15.58959 8.831867 1 31 hour | 30,862 13.27992 10.36027 0 99 -------------+--------------------------------------------------------- minute | 30,862 28.89787 18.46584 0 99 ve_total | 30,862 1.511762 .7891973 1 30 persons | 30,862 2.479101 1.77146 1 51 peds | 30,862 .1710194 .4229782 0 8 nhs | 30,862 .3192275 .5898972 0 9 -------------+--------------------------------------------------------- road_fnc | 30,862 8.156957 6.523772 1 99 route | 30,862 3.591504 1.76173 1 9 sp_jur | 30,862 .028352 .3085568 0 9 harm_ev | 30,862 18.41436 13.78695 1 99 man_coll | 30,862 1.558681 4.898785 0 99 -------------+--------------------------------------------------------- rel_junc | 30,862 1.817867 2.879447 1 99 rel_road | 30,862 2.634405 4.942441 1 99 traf_flo | 30,862 1.691336 1.266576 1 9 no_lanes | 30,862 2.516201 1.186634 1 9 sp_limit | 30,862 50.19769 15.08843 0 99 -------------+--------------------------------------------------------- alignmnt | 30,862 1.328106 .7626025 1 9 profile | 30,862 1.435131 1.088597 1 9 pave_typ | 30,862 2.089171 1.050036 1 9 sur_cond | 30,862 1.291362 .9219233 1 9 tra_cont | 30,862 4.590953 12.19522 0 99 -------------+--------------------------------------------------------- t_cont_f | 30,862 .71392 1.369931 0 9 lgt_cond | 30,862 1.863846 1.136597 1 9 weather1 | 30,862 1.253483 .9727168 1 9 weather2 | 30,862 .0143542 .2435548 0 8 wrk_zone | 30,862 .0287084 .2490749 0 4 -------------+--------------------------------------------------------- not_hour | 30,862 46.73531 41.78859 0 99 not_min | 30,862 56.74823 35.84768 0 99 arr_hour | 30,862 45.35685 41.44498 0 99 arr_min | 30,862 56.9906 35.93844 0 99 hosp_hr | 30,862 70.8758 37.14634 0 99 -------------+--------------------------------------------------------- hosp_mn | 30,862 75.56305 31.29541 0 99 sch_bus | 30,862 .0033698 .0579534 0 1 cf1 | 30,862 .8157605 4.586355 0 99 cf2 | 30,862 .1221567 2.998587 0 99 cf3 | 30,862 .0850561 2.878381 0 99 -------------+--------------------------------------------------------- fatals | 30,862 1.097887 .3836895 1 11 day_week | 30,862 4.158998 2.121766 1 7 drunk_dr | 30,862 .337146 .4945179 0 3 st_case | 30,862 278149.3 161696 10001 560116 city | 30,862 1116.331 1854.922 0 9999 -------------+--------------------------------------------------------- year | 30,862 2009 0 2009 2009 milept | 30,862 14916.86 35286.41 0 99999 tway_id | 0 tway_id2 | 0 rail | 0 -------------+--------------------------------------------------------- latitude | 30,498 36.69518 5.160275 19.45925 65.40607 longitud | 30,499 -91.93055 14.80795 -165.4221 -67.15342 ve_forms | 30,862 1.475601 .7509459 1 29 weather | 30,862 1.253678 .9727328 1 9 by Jean Roth , jroth@nber.org , 18 Apr 2016