Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 22 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 45,223 27.95721 15.91333 1 56 county | 45,223 86.80203 94.12361 0 999 month | 45,223 6.874356 3.328319 1 12 day | 45,223 15.67873 8.788206 1 31 year | 45,223 79 0 79 79 -------------+--------------------------------------------------------- hour | 45,223 12.98954 9.630537 0 99 minute | 45,223 25.78409 18.51994 0 99 ve_forms | 45,223 1.432059 .6587977 0 18 persons | 45,223 2.540411 1.672688 1 49 vehicles | 45,223 1.456869 .7810845 1 99 -------------+--------------------------------------------------------- land_use | 45,223 1.62864 .8723461 1 9 cl_tway | 45,223 4.621653 1.85848 1 9 road_fnc | 0 ta_1_cl | 45,223 4.036818 2.471427 1 9 sp_jur | 45,223 .0237932 .3217802 0 9 -------------+--------------------------------------------------------- harm_ev | 45,223 14.15037 8.7147 1 99 man_coll | 45,223 1.184066 1.740773 0 9 rel_junc | 45,223 1.546204 1.21988 1 9 rel_road | 45,223 2.11859 1.635787 1 9 road_flo | 45,223 3.556553 1.293827 1 9 -------------+--------------------------------------------------------- no_lanes | 45,223 2.464918 1.171263 1 9 sp_limit | 45,223 52.28585 19.79725 5 99 alignmnt | 45,223 1.335161 .8415822 1 9 profile | 45,223 1.563673 1.523615 1 9 pave_typ | 45,223 2.572939 2.090301 1 9 -------------+--------------------------------------------------------- sur_cond | 45,223 1.311899 .887005 1 9 tra_cont | 45,223 5.546514 21.65369 0 99 lgt_cond | 45,223 1.960861 1.162266 1 9 weather | 45,223 1.324415 1.141231 1 9 hit_run | 45,223 .0731928 .3696664 0 3 -------------+--------------------------------------------------------- c_m_zone | 0 not_hour | 45,223 71.05597 41.43077 0 99 not_min | 45,223 74.99732 36.94794 0 99 arr_hour | 45,223 67.30175 42.65875 0 99 arr_min | 45,223 72.0875 37.7205 0 99 -------------+--------------------------------------------------------- sch_bus | 45,223 .0042677 .0651891 0 1 cf1 | 45,223 3.43668 14.05606 0 99 cf2 | 45,223 1.824956 12.74592 0 99 cf3 | 45,223 1.631073 12.52766 0 99 fatals | 45,223 1.129801 .438063 1 10 -------------+--------------------------------------------------------- day_week | 45,223 4.264821 2.155977 1 7 drunk_dr | 45,223 .4108308 .5377726 0 3 st_case | 45,223 280486.1 158961.7 10001 560199 city | 45,223 1150.587 2025.253 0 9999 rail | 0 by Jean Roth , jroth@nber.org , 22 Apr 2016