Summary statistics for form2004 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     fmtname |          0
       start |          0
         end |          0
       label |          0
         min |      3,943    5.889678    2.135385          2         12
-------------+---------------------------------------------------------
         max |      3,943    25.46564    9.906605          7         40
     default |      3,943    25.40933    9.948515          7         40
      length |      3,943    25.40933    9.948515          7         40
        fuzz |      3,943    1.00e-12           0   1.00e-12   1.00e-12
      prefix |          0
-------------+---------------------------------------------------------
        mult |      3,943           0           0          0          0
        fill |          0
      noedit |      3,943           0           0          0          0
        type |          0
       sexcl |          0
-------------+---------------------------------------------------------
       eexcl |          0
         hlo |          0
      decsep |          0
     DIG3SEP |          0
    datatype |          0
-------------+---------------------------------------------------------
    language |          0

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