Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 39,092 28.14016 15.97389 1 56 county | 39,092 88.69111 96.14727 1 999 month | 39,092 6.780313 3.305369 1 12 day | 39,092 15.68119 8.873479 1 99 year | 39,092 82 0 82 82 -------------+--------------------------------------------------------- hour | 39,092 12.95022 9.963081 0 99 minute | 39,092 29.81242 22.94848 0 99 ve_forms | 39,092 1.444157 .6333992 1 18 persons | 39,092 2.612299 1.748127 1 66 land_use | 39,092 1.604599 .766274 1 9 -------------+--------------------------------------------------------- road_fnc | 39,092 4.546941 2.163632 1 9 fed_aid | 39,092 3.885526 2.396205 1 9 cl_tway | 39,092 3.383173 1.445287 1 9 sp_jur | 39,092 .0249412 .3211875 0 9 harm_ev | 39,092 16.3567 12.03108 1 99 -------------+--------------------------------------------------------- man_coll | 39,092 1.084826 1.629701 0 9 rel_junc | 39,092 1.503632 1.147201 1 9 rel_road | 39,092 2.226747 1.688261 1 9 tway_flo | 39,092 1.414228 .9658332 1 9 no_lanes | 39,092 2.470352 1.09833 1 9 -------------+--------------------------------------------------------- sp_limit | 39,092 49.3537 16.49947 0 99 alignmnt | 39,092 1.295534 .6482414 1 9 profile | 39,092 1.452318 1.216084 1 9 pave_typ | 39,092 2.344188 1.700368 1 9 sur_cond | 39,092 1.295815 .840496 1 9 -------------+--------------------------------------------------------- tra_cont | 39,092 4.168526 12.48733 0 99 t_cont_f | 39,092 .5716259 1.350067 0 9 hit_run | 39,092 .0829582 .3934684 0 3 lgt_cond | 39,092 1.910058 .9940315 1 9 weather | 39,092 1.292157 .9743096 1 9 -------------+--------------------------------------------------------- c_m_zone | 39,092 .0160902 .179026 0 4 not_hour | 39,092 56.63335 44.424 0 99 not_min | 39,092 63.23002 39.41297 0 99 arr_hour | 39,092 53.40732 44.39437 0 99 arr_min | 39,092 61.20715 39.33977 0 99 -------------+--------------------------------------------------------- sch_bus | 39,092 .0031208 .055778 0 1 cf1 | 39,092 .9311112 9.35826 0 99 cf2 | 39,092 .8931751 9.352327 0 99 cf3 | 39,092 .8915891 9.352024 0 99 fatals | 39,092 1.124143 .442739 1 10 -------------+--------------------------------------------------------- day_week | 39,092 4.241226 2.152123 1 9 drunk_dr | 39,092 .4408575 .5473713 0 5 st_case | 39,092 282218.4 159645.6 10001 560174 city | 39,092 1180.956 2040.463 0 9999 milept | 38,952 28128.47 44660.22 0 99999 -------------+--------------------------------------------------------- tway_id | 0 rail | 0 by Jean Roth , jroth@nber.org , 18 Apr 2016