Summary statistics for accident dataset :

by Jean Roth , jroth@nber.org , 22 Apr 2016

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |        489          43           0         43         43
      county |        489          72           0         72         72
       month |        489    6.734151    3.534212          1         12
         day |        489    15.32924    8.696852          1         31
        year |        489          78           0         78         78
-------------+---------------------------------------------------------
        hour |        489    13.63395    7.219548          0         23
      minute |        489    21.56851    17.30488          0         55
    ve_forms |        489    1.192229     .671325          0          5
     persons |        489    2.703476    3.589033          1         66
    vehicles |        489    1.302658    .5529477          1          5
-------------+---------------------------------------------------------
    land_use |        489    1.599182    .4905661          1          2
     cl_tway |        489    5.083845    1.263908          3          8
    road_fnc |          0
     ta_1_cl |        489    4.386503    2.604359          2          8
      sp_jur |        489    .0163599    .3617725          0          8
-------------+---------------------------------------------------------
     harm_ev |        489    11.78119    6.822634          1         31
    man_coll |        489    .6871166    1.363404          0          6
    rel_junc |        489    1.200409    .5977415          1          6
    rel_road |        489     1.95501    1.464757          1          9
    road_flo |        489    3.470348    1.090026          1          5
-------------+---------------------------------------------------------
    no_lanes |        489    3.179959    1.863236          1          9
    sp_limit |        489    37.03476    8.801128         10         55
    alignmnt |        489    1.141104    .3484856          1          2
     profile |        489    1.149284    .3567334          1          2
    pave_typ |        489    1.781186     .553652          1          5
-------------+---------------------------------------------------------
    sur_cond |        489     1.06544    .2556971          1          3
    tra_cont |        489    11.08998    30.68301          0         99
    lgt_cond |        489    2.396728    1.468965          1          6
     weather |        489     1.03272    .1780845          1          2
     hit_run |        489    .2310838    .6384014          0          3
-------------+---------------------------------------------------------
    c_m_zone |          0
    not_hour |        489    38.66871    48.34991          0         99
     not_min |        489    38.66871    48.34991          0         99
    arr_hour |        489    38.66871    48.34991          0         99
     arr_min |        489    38.66871    48.34991          0         99
-------------+---------------------------------------------------------
     sch_bus |        489     .006135    .0781654          0          1
         cf1 |        489     2.02454    7.865898          0         46
         cf2 |        489    .3844581    3.633215          0         46
         cf3 |        489           0           0          0          0
      fatals |        489    1.096115     .584083          1         11
-------------+---------------------------------------------------------
    day_week |        489    4.208589    2.228138          1          7
    drunk_dr |        489    .2269939     .443079          0          2
     st_case |        489    431625.2    1504.532     430001     433251
        city |        489    510.3661    339.0687         10       1060
        rail |          0

by Jean Roth , jroth@nber.org , 22 Apr 2016