Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 516 42.99806 .0440225 42 43 county | 516 72.08333 1.892969 72 115 month | 516 6.420543 3.636851 1 12 day | 516 15.60078 8.853035 1 31 year | 516 89 0 89 89 -------------+--------------------------------------------------------- hour | 516 13.66473 8.315035 0 99 minute | 516 23.36822 17.11254 0 99 ve_forms | 516 1.372093 .6544221 1 7 persons | 516 2.606589 1.622139 1 15 fed_aid | 516 3.531008 1.52169 1 5 -------------+--------------------------------------------------------- road_fnc | 516 9.129845 5.672673 1 16 route | 516 3.503876 1.146537 1 8 sp_jur | 516 0 0 0 0 harm_ev | 516 14.56395 11.38496 1 43 man_coll | 516 .8507752 1.509523 0 6 -------------+--------------------------------------------------------- rel_junc | 516 1.116279 .4204095 1 5 rel_road | 516 2.267442 1.925351 1 6 traf_flo | 516 1.556202 .6345554 1 4 no_lanes | 516 2.501938 .9169367 1 7 sp_limit | 516 42.13178 9.902931 0 55 -------------+--------------------------------------------------------- alignmnt | 516 1.217054 .4126399 1 2 profile | 516 1.362403 .6815611 1 3 pave_typ | 516 1.934109 .4221068 1 8 sur_cond | 516 1.199612 .4915597 1 8 tra_cont | 516 .5833333 3.711807 0 40 -------------+--------------------------------------------------------- t_cont_f | 516 .1472868 .6458323 0 3 hit_run | 516 .1763566 .562504 0 2 lgt_cond | 516 1.936047 .9294424 1 5 weather | 516 1.197674 .4903678 1 8 c_m_zone | 516 0 0 0 0 -------------+--------------------------------------------------------- not_hour | 516 2.631783 7.24308 0 99 not_min | 516 5.143411 13.04789 0 99 arr_hour | 516 2.618217 7.209728 0 99 arr_min | 516 5.403101 13.38019 0 99 hosp_hr | 516 .1918605 4.358232 0 99 -------------+--------------------------------------------------------- hosp_mn | 516 .1918605 4.358232 0 99 sch_bus | 516 .003876 .0621968 0 1 cf1 | 516 0 0 0 0 cf2 | 516 0 0 0 0 cf3 | 516 0 0 0 0 -------------+--------------------------------------------------------- fatals | 516 1.052326 .3039775 1 5 day_week | 516 4.031008 2.124066 1 7 drunk_dr | 516 .3313953 .5069065 0 2 st_case | 516 430261 408.0527 421734 430547 milept | 516 233.5058 442.7926 0 2220 -------------+--------------------------------------------------------- city | 516 526.6047 330.9607 0 1060 tway_id | 0 rail | 0 by Jean Roth , jroth@nber.org , 18 Apr 2016