Summary statistics for usstate19agesrace dataset :

by Jean Roth , jroth@nber.org , 2 Jan 2016

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |    247,882    1996.501    9.236042       1981       2012
          st |          0
      stfips |          0
      county |          0
    registry |    247,882          99           0         99         99
-------------+---------------------------------------------------------
        race |    247,882    2.499697    1.118116          1          4
    hispanic |    247,882           9           0          9          9
         sex |    247,882    1.500061     .500001          1          2
         age |    247,882    8.994457    5.475239          0         18
         pop |    247,882    34961.33    87760.18          0    1234258

by Jean Roth , jroth@nber.org , 2 Jan 2016