Summary statistics for acc_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     39,631        1984           0       1984       1984
       state |     39,631    27.68961    16.16385          1         56
      county |     39,631    88.27867    96.71423          0        999
      fatals |     39,631    1.116727    .4193172          1         10
     st_case |     39,631    277738.4    161476.4      10001     560140
-------------+---------------------------------------------------------
    a_crainj |     39,631           1           0          1          1
    a_region |     39,631    5.290505    2.469662          1         10
        a_ru |     39,631    1.435139     .497306          1          3
     a_inter |     39,631    1.909768    .3014528          1          3
     a_relrd |     39,631     2.05849    1.385102          1          6
-------------+---------------------------------------------------------
    a_intsec |     39,631    1.795816    .4059781          1          3
    a_roadfc |     39,631    3.980672    1.490547          1          7
      a_junc |     39,631    1.855694    .4978813          1          4
    a_mancol |     39,631    1.919583    1.269717          1          7
        a_rd |     39,631           3           0          3          3
-------------+---------------------------------------------------------
       a_tod |     39,631    1.590548    .5079936          1          3
       a_dow |     39,631    1.458404     .501906          1          3
        a_hr |     39,631    1.958164    .2002166          1          2
        a_ct |     39,631    1.449194    .5845485          1          3
        a_lt |     39,631      1.8781    .3271739          1          2
-------------+---------------------------------------------------------
        a_mc |     39,631    1.885216     .318765          1          2
     a_spcra |     39,631    1.674497    .4685683          1          2
       a_ped |     39,631    1.824329    .3805444          1          2
     a_pedal |     39,631    1.978552    .1448737          1          2
      a_roll |     39,631    1.770205    .4207061          1          2
-------------+---------------------------------------------------------
    a_polpur |     39,631    1.994625    .0731152          1          2
    a_posbac |     39,631    2.286796    .9045024          1          3
    a_d15_19 |     39,631     1.81623    .3873016          1          2
    a_d16_19 |     39,631    1.821756    .3827231          1          2
    a_d15_20 |     39,631    1.760087    .4270357          1          2
-------------+---------------------------------------------------------
    a_d16_20 |     39,631    1.765562    .4236522          1          2
    a_d65pls |     39,631    1.895334    .3061258          1          2
    a_d21_24 |     39,631    1.784007    .4115143          1          2
    a_d16_24 |     39,631    1.570311    .4950379          1          2
      a_dist |     39,631    1.902501    .2966404          1          2
-------------+---------------------------------------------------------
    a_drowsy |     39,631    1.970175    .1701068          1          2

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