Summary statistics for mfr_dt variable in demo2007q2 dataset :

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
      mfr_dt |     78154    2.01e+07    3266.018   1.99e+07   2.01e+07

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