Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 39,252 27.13737 16.17174 1 56 county | 39,252 87.42581 89.64117 0 999 month | 39,252 6.743325 3.356165 1 12 day | 39,252 15.63424 8.924593 1 99 hour | 39,252 13.23741 10.32099 0 99 -------------+--------------------------------------------------------- minute | 39,252 28.67375 18.51 0 99 ve_total | 39,252 1.55345 .7666334 1 20 persons | 39,252 2.579792 1.85479 1 51 peds | 39,252 .1592021 .4108087 0 12 nhs | 39,252 .3811016 .882517 0 9 -------------+--------------------------------------------------------- road_fnc | 39,252 8.632019 9.197073 1 99 route | 39,252 3.558239 1.825401 1 9 sp_jur | 39,252 .0329919 .3744086 0 9 harm_ev | 39,252 17.79685 13.54518 1 99 man_coll | 39,252 1.675227 4.838151 0 99 -------------+--------------------------------------------------------- rel_junc | 39,252 1.914705 4.392249 1 99 rel_road | 39,252 2.547106 5.167126 1 99 traf_flo | 39,252 1.697111 1.274646 1 9 no_lanes | 39,252 2.508 1.175451 1 9 sp_limit | 39,252 50.55796 14.75181 0 99 -------------+--------------------------------------------------------- alignmnt | 39,252 1.313181 .7766408 1 9 profile | 39,252 1.43343 1.142817 1 9 pave_typ | 39,252 2.083282 .9978544 1 9 sur_cond | 39,252 1.26819 .8738669 1 9 tra_cont | 39,252 4.598415 12.06851 0 99 -------------+--------------------------------------------------------- t_cont_f | 39,252 .7132121 1.370041 0 9 hit_run | 39,252 .0835117 .419222 0 5 lgt_cond | 39,252 1.800087 1.055929 1 9 weather | 39,252 1.266789 1.013478 1 9 c_m_zone | 39,252 .0332212 .2535162 0 4 -------------+--------------------------------------------------------- not_hour | 39,252 43.62909 42.51477 0 99 not_min | 39,252 53.40867 37.62007 0 99 arr_hour | 39,252 43.55477 42.48276 0 99 arr_min | 39,252 55.53011 37.98934 0 99 hosp_hr | 39,252 55.60147 46.17792 0 99 -------------+--------------------------------------------------------- hosp_mn | 39,252 59.82279 43.49411 0 99 sch_bus | 39,252 .0031846 .0563426 0 1 cf1 | 39,252 .8873943 5.817598 0 99 cf2 | 39,252 .2571589 4.831344 0 99 cf3 | 39,252 .2335168 4.789853 0 99 -------------+--------------------------------------------------------- fatals | 39,252 1.108479 .4108072 1 23 day_week | 39,252 4.156807 2.113429 1 9 drunk_dr | 39,252 .3964129 .6035447 0 12 st_case | 39,252 272161.4 161557.1 10001 560147 city | 39,252 1023.597 1815.507 0 9999 -------------+--------------------------------------------------------- milept | 39,252 15355.19 35692.28 0 99999 year | 39,252 2005 0 2005 2005 tway_id | 0 tway_id2 | 0 rail | 0 -------------+--------------------------------------------------------- ve_forms | 39,252 1.515719 .7290299 1 20 latitude | 37,819 36.70062 5.093001 19.06949 64.91371 longitud | 37,819 -92.18817 14.96305 -165.2685 -67.23511 by Jean Roth , jroth@nber.org , 18 Apr 2016