Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 22 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 42,211 28.15875 15.89254 1 56 county | 42,211 87.06638 93.58516 1 999 month | 42,211 6.90249 3.310435 1 99 day | 42,211 15.63024 8.872952 1 99 year | 42,211 77.00052 .1070804 77 99 -------------+--------------------------------------------------------- hour | 42,211 13.0551 9.21447 0 99 minute | 42,211 26.91879 17.95084 0 99 ve_forms | 42,211 1.433655 .6677488 0 28 persons | 42,211 2.632205 1.778541 1 45 vehicles | 42,211 1.461657 1.148949 1 99 -------------+--------------------------------------------------------- land_use | 42,211 1.598991 .620336 1 9 cl_tway | 42,211 4.591457 1.869211 1 9 road_fnc | 0 ta_1_cl | 0 sp_jur | 42,211 .019592 .2641314 0 9 -------------+--------------------------------------------------------- harm_ev | 42,211 13.34676 7.932192 1 99 man_coll | 42,211 1.182393 1.775606 0 9 rel_junc | 42,211 1.397527 .8956911 1 9 rel_road | 42,211 2.062496 1.54295 1 9 road_flo | 42,211 3.548791 1.232009 1 9 -------------+--------------------------------------------------------- no_lanes | 42,211 2.451636 1.219812 1 9 sp_limit | 42,211 54.70899 21.58978 5 99 alignmnt | 42,211 1.391438 1.077777 1 9 profile | 42,211 1.748502 1.905876 1 9 pave_typ | 42,211 2.581555 2.085804 1 9 -------------+--------------------------------------------------------- sur_cond | 42,211 1.310985 .9039477 1 9 tra_cont | 42,211 4.917983 20.36388 0 99 lgt_cond | 42,211 1.911516 1.163047 1 9 weather | 42,211 1.306982 1.121331 1 9 hit_run | 42,211 .0591789 .3363112 0 3 -------------+--------------------------------------------------------- c_m_zone | 0 not_hour | 42,211 72.5089 40.63984 0 99 not_min | 42,211 76.44896 35.8955 0 99 arr_hour | 42,211 67.79022 42.2938 0 99 arr_min | 42,211 72.70354 37.11502 0 99 -------------+--------------------------------------------------------- sch_bus | 42,211 .0040037 .0631487 0 1 cf1 | 42,211 3.400109 14.22228 0 99 cf2 | 42,211 2.001516 13.15706 0 99 cf3 | 42,211 1.73405 12.89263 0 99 fatals | 42,211 1.134254 .4517512 1 10 -------------+--------------------------------------------------------- day_week | 42,211 4.275142 2.153946 1 7 drunk_dr | 42,211 .3596693 .5176693 0 3 st_case | 42,211 282699.3 158591.1 10001 560208 city | 42,211 1105.512 1983.952 0 9999 rail | 0 by Jean Roth , jroth@nber.org , 22 Apr 2016