Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 447 43 0 43 43 county | 447 72 0 72 72 month | 447 6.230425 3.526093 1 12 day | 447 15.96868 8.834497 1 31 year | 447 90 0 90 90 -------------+--------------------------------------------------------- hour | 447 13.54139 7.458553 0 24 minute | 447 23.35123 16.77374 0 55 ve_forms | 447 1.360179 .5780189 1 4 persons | 447 2.626398 1.690523 1 17 fed_aid | 447 3.315436 1.650196 1 5 -------------+--------------------------------------------------------- road_fnc | 447 8.787472 5.483937 1 16 route | 447 3.308725 1.26473 1 4 sp_jur | 447 0 0 0 0 harm_ev | 447 14.64653 10.83945 1 43 man_coll | 447 .8076063 1.465182 0 6 -------------+--------------------------------------------------------- rel_junc | 447 1.080537 .2724275 1 2 rel_road | 447 2.250559 1.939637 1 6 traf_flo | 447 1.731544 .6825586 1 4 no_lanes | 447 2.809843 1.133308 1 6 sp_limit | 447 41.73378 9.568179 15 55 -------------+--------------------------------------------------------- alignmnt | 447 1.183445 .3874647 1 2 profile | 447 1.277405 .5830217 1 3 pave_typ | 447 1.923937 .4376196 1 8 sur_cond | 447 1.14094 .3547272 1 3 tra_cont | 447 .753915 4.566629 0 50 -------------+--------------------------------------------------------- t_cont_f | 447 .1767338 .7039893 0 3 hit_run | 447 .2192394 .607344 0 2 lgt_cond | 447 2.138702 1.028082 1 5 weather | 447 1.138702 .346023 1 2 c_m_zone | 447 .0067114 .0817393 0 1 -------------+--------------------------------------------------------- not_hour | 447 2.932886 6.632909 0 24 not_min | 447 4.854586 12.07261 0 55 arr_hour | 447 2.834452 6.54713 0 23 arr_min | 447 6.214765 14.15492 0 59 hosp_hr | 447 0 0 0 0 -------------+--------------------------------------------------------- hosp_mn | 447 0 0 0 0 sch_bus | 447 0 0 0 0 cf1 | 447 .0223714 .3203707 0 6 cf2 | 447 0 0 0 0 cf3 | 447 0 0 0 0 -------------+--------------------------------------------------------- fatals | 447 1.058166 .3364537 1 6 day_week | 447 4.284116 2.204214 1 7 drunk_dr | 447 .3355705 .5222932 0 2 st_case | 447 430226.7 131.3798 430001 430453 milept | 447 265.8188 471.2157 0 2271 -------------+--------------------------------------------------------- city | 447 530.0492 330.42 10 1060 tway_id | 0 rail | 0 by Jean Roth , jroth@nber.org , 18 Apr 2016