Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 22 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 491 43 0 43 43 county | 491 72 0 72 72 month | 491 6.778004 3.470224 1 12 day | 491 15.69246 8.979633 1 31 year | 491 80 0 80 80 -------------+--------------------------------------------------------- hour | 491 14.23422 7.066169 0 24 minute | 491 22.45418 16.56402 0 55 ve_forms | 491 1.266802 .7057329 0 6 persons | 491 2.553971 1.563173 1 11 vehicles | 491 1.354379 .6166699 1 6 -------------+--------------------------------------------------------- land_use | 491 1.395112 .4893733 1 2 cl_tway | 491 4.790224 1.198122 2 8 road_fnc | 0 ta_1_cl | 491 4.586558 2.582939 2 8 sp_jur | 491 .0040733 .0902587 0 2 -------------+--------------------------------------------------------- harm_ev | 491 12.07536 6.338128 1 33 man_coll | 491 .706721 1.318447 0 6 rel_junc | 491 1.256619 .5849577 1 5 rel_road | 491 1.792261 1.500211 1 9 road_flo | 491 3.631365 .9628582 1 5 -------------+--------------------------------------------------------- no_lanes | 491 2.260692 .6890268 1 6 sp_limit | 491 37.08758 8.303581 20 55 alignmnt | 491 1.160896 .3678099 1 2 profile | 491 1.120163 .3254836 1 2 pave_typ | 491 1.843177 .3640045 1 2 -------------+--------------------------------------------------------- sur_cond | 491 1.10387 .3054025 1 2 tra_cont | 491 11.67413 31.33212 0 98 lgt_cond | 491 2.077393 1.083324 1 5 weather | 491 1.050916 .2200514 1 2 hit_run | 491 .2281059 .6363995 0 3 -------------+--------------------------------------------------------- c_m_zone | 491 .0040733 .0637574 0 1 not_hour | 491 26.01018 43.61597 0 99 not_min | 491 26.01018 43.61597 0 99 arr_hour | 491 26.01018 43.61597 0 99 arr_min | 491 26.01018 43.61597 0 99 -------------+--------------------------------------------------------- sch_bus | 491 0 0 0 0 cf1 | 491 .3767821 2.905061 0 26 cf2 | 491 .0835031 1.850304 0 41 cf3 | 491 .089613 1.985692 0 44 fatals | 491 1.059063 .3040112 1 5 -------------+--------------------------------------------------------- day_week | 491 4.112016 2.168814 1 7 drunk_dr | 491 .2382892 .4405937 0 2 st_case | 491 430247.2 142.7077 430001 430495 city | 491 555.0978 335.1174 10 1060 rail | 0 by Jean Roth , jroth@nber.org , 22 Apr 2016