Summary statistics for acc_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |        450        1982           0       1982       1982
       state |        450          43           0         43         43
      county |        450           0           0          0          0
      fatals |        450    1.066667     .340313          1          4
     st_case |        450    430227.9    131.3006     430001     430454
-------------+---------------------------------------------------------
    a_crainj |        450           1           0          1          1
    a_region |        450           2           0          2          2
        a_ru |        450        1.46    .4989521          1          2
     a_inter |        450           2           0          2          2
     a_relrd |        450    1.953333    1.380762          1          6
-------------+---------------------------------------------------------
    a_intsec |        450        1.86    .3473732          1          2
    a_roadfc |        450    4.235556    1.348951          2          6
      a_junc |        450    1.871111    .3671489          1          3
    a_mancol |        450         1.5    1.066288          1          7
        a_rd |        450           3           0          3          3
-------------+---------------------------------------------------------
       a_tod |        450    1.651111    .4999431          1          3
       a_dow |        450    1.535556    .5081323          1          3
        a_hr |        450    1.862222    .3450502          1          2
        a_ct |        450    1.273333    .5156353          1          3
        a_lt |        450    1.986667    .1148253          1          2
-------------+---------------------------------------------------------
        a_mc |        450    1.946667    .2249474          1          2
     a_spcra |        450    1.595556    .4913304          1          2
       a_ped |        450    1.546667    .4983715          1          2
     a_pedal |        450    1.957778    .2013196          1          2
      a_roll |        450    1.913333    .2816591          1          2
-------------+---------------------------------------------------------
    a_polpur |        450           2           0          2          2
    a_posbac |        450    2.482222    .8446844          1          3
    a_d15_19 |        450    1.873333    .3329694          1          2
    a_d16_19 |        450    1.875556    .3304553          1          2
    a_d15_20 |        450    1.826667    .3789565          1          2
-------------+---------------------------------------------------------
    a_d16_20 |        450    1.828889    .3770252          1          2
    a_d65pls |        450    1.973333    .1612866          1          2
    a_d21_24 |        450    1.831111    .3750707          1          2
    a_d16_24 |        450    1.666667    .4719292          1          2
      a_dist |        450           2           0          2          2
-------------+---------------------------------------------------------
    a_drowsy |        450           2           0          2          2

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