Summary statistics for usracesingleages dataset :

by Jean Roth , jroth@nber.org , 2 Jan 2018

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year | 55,124,377    2004.212    7.649356       1990       2016
          st |          0
      stfips |          0
      county |          0
    registry | 55,124,377    84.98839    26.75764          1         99
-------------+---------------------------------------------------------
        race | 55,124,377    2.039257    1.106235          1          4
    hispanic | 55,124,377    .3284667    .4696556          0          1
         sex | 55,124,377    1.499839          .5          1          2
         age | 55,124,377    38.30789     23.8085          0         85
         pop | 55,124,377    141.5497    634.5797          1      57663

by Jean Roth , jroth@nber.org , 2 Jan 2018