Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 22 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 44,000 28.0195 15.97828 1 56 county | 44,000 91.40411 109.8796 0 999 month | 44,000 6.676273 3.32783 1 12 day | 44,000 15.74575 8.818677 1 31 year | 44,000 81 0 81 81 -------------+--------------------------------------------------------- hour | 44,000 12.98582 9.926388 0 99 minute | 44,000 25.82655 18.62373 0 99 ve_forms | 44,000 1.424977 .6903034 0 32 persons | 44,000 2.555932 1.706147 1 41 vehicles | 44,000 1.877432 6.462542 1 99 -------------+--------------------------------------------------------- land_use | 44,000 1.685205 1.082379 1 9 cl_tway | 0 road_fnc | 44,000 4.612295 2.25311 1 9 ta_1_cl | 44,000 3.963477 2.47291 1 9 sp_jur | 44,000 .0677045 .6821386 0 9 -------------+--------------------------------------------------------- harm_ev | 44,000 14.09089 8.684138 1 99 man_coll | 44,000 1.137455 1.728279 0 9 rel_junc | 44,000 1.537386 1.2508 1 9 rel_road | 44,000 2.268295 1.745558 1 9 road_flo | 44,000 3.534773 1.336809 1 9 -------------+--------------------------------------------------------- no_lanes | 44,000 2.470909 1.137482 1 9 sp_limit | 44,000 52.61184 19.759 5 99 alignmnt | 44,000 1.327023 .8126854 1 9 profile | 44,000 1.536045 1.478889 1 9 pave_typ | 44,000 2.723114 2.285701 1 9 -------------+--------------------------------------------------------- sur_cond | 44,000 1.287091 .9566084 1 9 tra_cont | 44,000 6.818068 24.08527 0 99 lgt_cond | 44,000 1.945682 1.081953 1 9 weather | 44,000 1.281227 1.034465 1 9 hit_run | 44,000 .0853182 .3991433 0 3 -------------+--------------------------------------------------------- c_m_zone | 44,000 .0159545 .1640972 0 3 not_hour | 44,000 63.75875 43.71128 0 99 not_min | 44,000 69.03423 38.80816 0 99 arr_hour | 44,000 61.60541 44.06886 0 99 arr_min | 44,000 67.36389 39.00595 0 99 -------------+--------------------------------------------------------- sch_bus | 44,000 .0029773 .0544837 0 1 cf1 | 44,000 3.158682 13.728 0 99 cf2 | 44,000 1.717023 12.53438 0 99 cf3 | 44,000 1.585114 12.39005 0 99 fatals | 44,000 1.120477 .4268418 0 11 -------------+--------------------------------------------------------- day_week | 44,000 4.278932 2.150403 1 7 drunk_dr | 44,000 .4388182 .5488335 0 4 st_case | 44,000 281111.6 159661.5 10001 560232 city | 44,000 1205.335 2095.77 0 9999 rail | 0 by Jean Roth , jroth@nber.org , 22 Apr 2016