Summary statistics for accident dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- state | 41,090 27.42972 16.06391 1 56 county | 41,090 86.81927 94.47789 0 997 month | 41,090 6.78934 3.286444 1 12 day | 41,090 15.8054 8.916327 1 99 year | 41,090 86 0 86 86 -------------+--------------------------------------------------------- hour | 41,090 13.41261 10.85558 0 99 minute | 41,090 27.63867 18.6427 0 99 ve_forms | 41,090 1.479484 .6687339 1 24 persons | 41,090 2.654344 1.767413 1 41 land_use | 41,090 1.5633 .5253406 1 9 -------------+--------------------------------------------------------- road_fnc | 41,090 4.610319 2.199666 1 9 fed_aid | 41,090 3.923217 2.415657 1 9 cl_tway | 41,090 3.425943 1.489538 1 9 sp_jur | 41,090 .0277196 .3327481 0 9 harm_ev | 41,090 16.68985 12.20342 1 99 -------------+--------------------------------------------------------- man_coll | 41,090 1.139547 1.646479 0 9 rel_junc | 41,090 1.453736 1.046633 1 9 rel_road | 41,090 2.381334 1.887486 1 9 tway_flo | 41,090 1.414699 .9229553 1 9 no_lanes | 41,090 2.405184 1.044428 1 9 -------------+--------------------------------------------------------- sp_limit | 41,090 47.65096 13.68886 0 99 alignmnt | 41,090 1.290703 .5933209 1 9 profile | 41,090 1.431394 1.116268 1 9 pave_typ | 41,090 2.201314 1.372102 1 9 sur_cond | 41,090 1.255634 .7657077 1 9 -------------+--------------------------------------------------------- tra_cont | 41,090 3.937746 11.22326 0 99 t_cont_f | 41,090 .5900706 1.226132 0 9 hit_run | 41,090 .0768313 .3764349 0 3 lgt_cond | 41,090 1.86274 1.001688 1 9 weather | 41,090 1.243198 .8599052 1 9 -------------+--------------------------------------------------------- c_m_zone | 41,090 .0218301 .2116964 0 4 not_hour | 41,090 43.17235 42.54746 0 99 not_min | 41,090 52.60119 37.97583 0 99 arr_hour | 41,090 40.65865 41.74717 0 99 arr_min | 41,090 50.93449 37.45604 0 99 -------------+--------------------------------------------------------- sch_bus | 41,090 .0029204 .0539626 0 1 cf1 | 41,090 .4697493 6.353184 0 99 cf2 | 41,090 .4054271 6.301971 0 99 cf3 | 41,090 .4023607 6.298633 0 99 fatals | 41,090 1.121611 .4411732 1 21 -------------+--------------------------------------------------------- day_week | 41,090 4.219348 2.134972 1 9 drunk_dr | 41,090 .4509613 .5472555 0 3 st_case | 41,090 275157.5 160438.5 10001 560150 city | 41,090 1103.316 1964.754 0 9999 milept | 41,090 31247.1 46080.42 0 99999 -------------+--------------------------------------------------------- tway_id | 0 rail | 0 by Jean Roth , jroth@nber.org , 18 Apr 2016