Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 38,491 27.58809 16.15955 1 56 county | 38,491 89.58071 93.37472 0 999 month | 38,491 6.658985 3.378357 1 12 day | 38,491 15.58115 8.914416 1 99 hour | 38,491 13.26528 10.57594 0 99 -------------+--------------------------------------------------------- minute | 38,491 28.35385 18.66685 0 99 ve_forms | 38,491 1.517913 .8437935 1 58 persons | 38,491 2.644358 1.983569 1 75 peds | 38,491 .165779 .446608 0 11 nhs | 38,491 .3218155 .6050079 0 9 -------------+--------------------------------------------------------- road_fnc | 38,491 7.878673 6.655657 1 99 route | 38,491 3.566912 1.827821 1 9 sp_jur | 38,491 .0343717 .3719695 0 9 harm_ev | 38,491 17.39908 12.89484 1 99 man_coll | 38,491 1.628926 4.569298 0 99 -------------+--------------------------------------------------------- rel_junc | 38,491 1.79403 2.877056 1 99 rel_road | 38,491 2.583097 5.087264 1 99 traf_flo | 38,491 1.586059 1.118117 1 9 no_lanes | 38,491 2.513289 1.246726 1 9 sp_limit | 38,491 50.69582 14.66782 0 99 -------------+--------------------------------------------------------- alignmnt | 38,491 1.30285 .7358023 1 9 profile | 38,491 1.53745 1.416699 1 9 pave_typ | 38,491 2.299525 1.56486 1 9 sur_cond | 38,491 1.268478 .853394 1 9 tra_cont | 38,491 4.466966 11.87851 0 99 -------------+--------------------------------------------------------- t_cont_f | 38,491 .6981112 1.354669 0 9 hit_run | 38,491 .0689252 .3655801 0 4 lgt_cond | 38,491 1.804162 1.054968 1 9 weather | 38,491 1.260814 .9873543 1 9 c_m_zone | 38,491 .033904 .237154 0 4 -------------+--------------------------------------------------------- not_hour | 38,491 40.16193 41.3561 0 99 not_min | 38,491 50.54382 36.87276 0 99 arr_hour | 38,491 38.68219 40.78058 0 99 arr_min | 38,491 51.48554 37.00564 0 99 hosp_hr | 38,491 51.9199 45.96777 0 99 -------------+--------------------------------------------------------- hosp_mn | 38,491 56.9251 43.12295 0 99 sch_bus | 38,491 .0030397 .0550501 0 1 cf1 | 38,491 1.096568 6.894261 0 99 cf2 | 38,491 .3878309 5.963439 0 99 cf3 | 38,491 .3560832 5.919319 0 99 -------------+--------------------------------------------------------- fatals | 38,491 1.117274 .4208339 1 14 day_week | 38,491 4.147073 2.105187 1 9 drunk_dr | 38,491 .4172404 .6221661 0 6 st_case | 38,491 276640.1 161496 10001 560151 city | 38,491 1034.374 1859.975 0 9999 -------------+--------------------------------------------------------- milept | 38,491 14262.14 34629.74 0 99999 year | 38,491 2002 0 2002 2002 tway_id | 0 rail | 0 latitude | 35,455 36.93866 5.242285 19.32684 64.82376 -------------+--------------------------------------------------------- longitud | 35,455 -91.96962 14.95924 -165.4125 -67.39831 by Jean Roth , jroth@nber.org , 18 Apr 2016