Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 22 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 39,161 28.45504 15.59695 1 56 county | 39,161 88.20056 97.57205 1 999 month | 39,161 6.79403 3.419192 1 99 day | 39,161 15.60361 8.874801 1 99 year | 39,161 75.00184 .2100554 75 99 -------------+--------------------------------------------------------- hour | 39,161 13.3289 9.862952 0 99 minute | 39,161 26.8845 18.18636 0 99 ve_forms | 39,161 1.418069 .6512613 0 23 persons | 39,161 2.678583 1.811194 1 49 vehicles | 0 -------------+--------------------------------------------------------- land_use | 39,161 1.633385 .5008041 1 9 cl_tway | 39,161 4.741401 1.881989 1 9 road_fnc | 0 ta_1_cl | 0 sp_jur | 39,161 .1767575 1.205691 0 9 -------------+--------------------------------------------------------- harm_ev | 39,161 13.46978 7.924501 1 99 man_coll | 39,161 1.15827 1.770452 0 9 rel_junc | 39,161 1.390388 .8710199 1 9 rel_road | 39,161 2.05554 1.583239 1 9 road_flo | 39,161 3.874237 .7870183 3 9 -------------+--------------------------------------------------------- no_lanes | 39,161 2.584689 1.509786 1 9 sp_limit | 39,161 56.71668 23.28716 5 99 alignmnt | 39,161 1.831286 2.080924 1 9 profile | 39,161 1.831312 2.080919 1 9 pave_typ | 39,161 2.753454 2.293029 1 9 -------------+--------------------------------------------------------- sur_cond | 39,161 1.307296 .9000341 1 9 tra_cont | 39,161 4.308802 19.00282 0 99 lgt_cond | 39,161 2.108935 1.694214 1 9 weather | 39,161 1.439085 1.442753 1 9 hit_run | 39,161 .0544419 .3168703 0 2 -------------+--------------------------------------------------------- c_m_zone | 0 not_hour | 39,161 78.37706 37.56774 0 99 not_min | 39,161 81.38635 33.20256 0 99 arr_hour | 39,161 71.80675 40.78516 0 99 arr_min | 39,161 75.98335 35.82104 0 99 -------------+--------------------------------------------------------- sch_bus | 0 cf1 | 39,161 2.907433 12.5932 0 99 cf2 | 39,161 1.743725 11.49742 0 99 cf3 | 39,161 1.250223 10.9449 0 99 fatals | 39,161 1.136973 .4619671 0 15 -------------+--------------------------------------------------------- day_week | 39,161 4.243508 2.141007 1 9 drunk_dr | 39,161 .2004801 .4174755 0 3 st_case | 39,161 285278.7 155884.8 10001 560172 city | 39,161 1109.938 1988.128 0 9999 rail | 0 by Jean Roth , jroth@nber.org , 22 Apr 2016