Summary statistics for accident dataset :

by Jean Roth , jroth@nber.org , 18 Apr 2016

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |        522          43           0         43         43
      county |        522          72           0         72         72
       month |        522    6.293103    3.515296          1         12
         day |        522    15.13602    8.591982          1         31
        year |        522          92           0         92         92
-------------+---------------------------------------------------------
        hour |        522    14.05556    8.355511          0         99
      minute |        522    23.46743    16.91312          0         99
    ve_forms |        522    1.375479    .6139863          1          5
     persons |        522    2.507663    1.292581          1          9
     fed_aid |        522    3.394636    1.620825          1          5
-------------+---------------------------------------------------------
    road_fnc |        522    8.896552    5.500378          1         16
       route |        522    3.385057    1.258829          1          6
      sp_jur |        522           0           0          0          0
     harm_ev |        522    15.00958    11.30887          1         43
    man_coll |        522     .894636    1.571828          0          6
-------------+---------------------------------------------------------
    rel_junc |        522    1.103448    .3048356          1          2
    rel_road |        522    2.383142     2.13614          1          6
    traf_flo |        522     2.08046     .786914          1          4
    no_lanes |        522    2.749042    1.284878          1          6
    sp_limit |        522     41.6092    9.717534         10         55
-------------+---------------------------------------------------------
    alignmnt |        522     1.17433    .3797565          1          2
     profile |        522    1.375479    .7069794          1          4
    pave_typ |        522    1.929119    .2783879          1          4
    sur_cond |        522    1.178161    .3879941          1          3
    tra_cont |        522    .6302682    3.279566          0         28
-------------+---------------------------------------------------------
    t_cont_f |        522    .2164751    .7720381          0          3
     hit_run |        522    .1934866    .5836181          0          2
    lgt_cond |        522    2.130268    1.009686          1          5
     weather |        522     1.17433    .3797565          1          2
    c_m_zone |        522    .0076628    .0872852          0          1
-------------+---------------------------------------------------------
    not_hour |        522    2.204981    5.926463          0         24
     not_min |        522    3.856322    10.82811          0         50
    arr_hour |        522    2.137931    5.825365          0         24
     arr_min |        522    4.323755    11.91527          0         55
     hosp_hr |        522           0           0          0          0
-------------+---------------------------------------------------------
     hosp_mn |        522           0           0          0          0
     sch_bus |        522    .0038314     .061839          0          1
         cf1 |        522    .0114943    .2626129          0          6
         cf2 |        522           0           0          0          0
         cf3 |        522           0           0          0          0
-------------+---------------------------------------------------------
      fatals |        522     1.09387    .4119156          1          6
    day_week |        522    4.212644    2.191152          1          7
    drunk_dr |        522    .3524904    .5350333          0          2
     st_case |        522    430266.8    152.1094     430001     430529
      milept |        522    3683.487    18224.57          0      99999
-------------+---------------------------------------------------------
        city |        522    497.4157    327.8816         10       1060
     tway_id |          0
        rail |          0
        peds |        522    .4521073    .5899066          0          3

by Jean Roth , jroth@nber.org , 18 Apr 2016