Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 537 43 0 43 43 county | 537 72 0 72 72 month | 537 6.808194 3.492327 1 12 day | 537 15.72439 9.002613 1 31 year | 537 86 0 86 86 -------------+--------------------------------------------------------- hour | 537 13.86778 7.442267 0 24 minute | 537 24.17877 16.65905 0 55 ve_forms | 537 1.363128 .5893804 1 4 persons | 537 2.67784 1.643205 1 17 land_use | 537 1.638734 .4808154 1 2 -------------+--------------------------------------------------------- road_fnc | 537 4.556797 2.0049 1 8 fed_aid | 537 3.893855 2.374047 1 8 cl_tway | 537 3.243948 .6870916 1 8 sp_jur | 537 0 0 0 0 harm_ev | 537 15 11.28779 1 43 -------------+--------------------------------------------------------- man_coll | 537 .6648045 1.207613 0 9 rel_junc | 537 1.156425 .4294659 1 3 rel_road | 537 2.001862 1.672315 1 7 tway_flo | 537 1.297952 .5153027 1 4 no_lanes | 537 2.134078 .4412211 1 4 -------------+--------------------------------------------------------- sp_limit | 537 39.78026 13.00704 0 99 alignmnt | 537 1.134078 .341054 1 2 profile | 537 1.143389 .4050959 1 3 pave_typ | 537 1.908752 .4064059 1 8 sur_cond | 537 1.171322 .4057386 1 5 -------------+--------------------------------------------------------- tra_cont | 537 3.888268 11.36761 0 50 t_cont_f | 537 .5437616 1.151914 0 3 hit_run | 537 .2160149 .615324 0 2 lgt_cond | 537 1.972067 1.011668 1 5 weather | 537 1.137803 .3450141 1 2 -------------+--------------------------------------------------------- c_m_zone | 537 .0037244 .0609709 0 1 not_hour | 537 12.90503 33.36362 0 99 not_min | 537 12.90503 33.36362 0 99 arr_hour | 537 12.90503 33.36362 0 99 arr_min | 537 12.90503 33.36362 0 99 -------------+--------------------------------------------------------- sch_bus | 537 0 0 0 0 cf1 | 537 .0037244 .0863064 0 2 cf2 | 537 0 0 0 0 cf3 | 537 0 0 0 0 fatals | 537 1.102421 .3749797 1 5 -------------+--------------------------------------------------------- day_week | 537 4.249534 2.288258 1 7 drunk_dr | 537 .3482309 .525259 0 2 st_case | 537 430293.1 171.2137 430001 430587 city | 537 532.4339 337.6449 10 1060 milept | 537 841.162 7455.089 0 99999 -------------+--------------------------------------------------------- tway_id | 0 rail | 0 by Jean Roth , jroth@nber.org , 18 Apr 2016