Summary statistics for mfr_dt variable in demo2004q1 dataset :

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
      mfr_dt |     60703    2.00e+07    147426.5   1.98e+07   5.20e+07

by Jean Roth , jroth@nber.org , 18 Dec 2015